User:Abyssal/List of the prehistoric life of Mexico

This list of the prehistoric life of Alabama contains the various prehistoric life-forms whose fossilized remains have been reported from within the country of Alabama.

Precambrian

• †Aspidella – or unidentified comparable form
  • †Aspidella terranovica
• †Cloudina
  • †Cloudina sp.
• †Collenia – tentative report
  • †Collenia sp.
• †Conophyton
  • †Conophyton sp.
• †Jacutophyton
  • †Jacutophyton sp.
• †Lockeia
  • †Lockeia sp.
• †Palaeophycus
  • †Palaeophycus tubularis
• †Platella
  • †Platella sp.
• †Sekwia
  • †Sekwia sp.

Paleozoic

• †Acanthocladia
  • †Acanthocladia guadalupensis
• †Acanthopecten
  • †Acanthopecten coloradoensis
• †Acrothele
  • †Acrothele concava
  • †Acrothele sp.
• †Actinoconchus
  • †Actinoconchus lamellosus
• †Adetognathus
  • †Adetognathus lautus
  • †Adetognathus spathus
• †Agathiceras
  • †Agathiceras girtyi
• †Ajacicyathus
  • †Ajacicyathus nevadensis
  • †Ajacicyathus rimouski
• †Akoldinioidia
  • †Akoldinioidia sulcatus – type locality for species
• †Albertella
  • †Albertella proveedora – or unidentified related form
  • †Albertella proveedora
• †Alisina
  • †Alisina mexicana
• †Alispirifer
  • †Alispirifer tamaulipensis – type locality for species
• †Alokistocare
  • †Alokistocare althea
  • †Alokistocare mexicana
  • †Alokistocare modestum – or unidentified related form
  • †Alokistocare modestum
• †Amaurotoma
  • †Amaurotoma sp.
• †Amecephalus
  • †Amecephalus arrojoensis
• †Amerista – tentative report
• †Amerista
  • †Amerista sp.
• †Amphistrophia
  • †Amphistrophia sp.
• †Amplexizaphrentis
  • †Amplexizaphrentis circularis – type locality for species
  • †Amplexizaphrentis sp.
• †Angelina
  • †Angelina hyeronimi
  • †Angelina spinosa – type locality for species
• †Anidanthus
  • †Anidanthus sp.
• †Anisopyge
  • †Anisopyge perannulata
• †Annularia
  • †Annularia sp.
• †Anomphalus
  • †Anomphalus sp.
• †Antagmus
  • †Antagmus buttsi
  • †Antagmus solitarius
• †Antiquatonia
  • †Antiquatonia sp.
• †Apachella – or unidentified comparable form
• †Apachella
  • †Apachella arizonensis
  • †Apachella sp.
• †Archaeocyathus
  • †Archaeocyathus arborensis
  • †Archaeocyathus sp.
  • †Archaeocyathus yavorskii
• †Archiastrella
  • †Archiastrella sp.
• †Arellana
  • †Arellana sonora – or unidentified comparable form
  • †Arellana sonora
• †Arellanella
  • †Arellanella caborcana
• †Arenovidalina – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Arenovidalina novospolovi – or unidentified comparable form
• †Arrythmocricus
  • †Arrythmocricus macdamensis
• †Asaphellus
  • †Asaphellus artus – type locality for species
  • †Asaphellus aspinus – type locality for species
  • †Asaphellus communis – type locality for species
  • †Asaphellus communis
• †Astartella
  • †Astartella concentrica
  • †Astartella subquadrata
• †Athabaskia
  • †Athabaskia bela
  • †Athabaskia minor
• †Atrypa
  • †Atrypa reticularis
  • †Atrypa sp.
• †Attenuatella
  • †Attenuatella attenuata – type locality for species
• †Aulocricus
  • †Aulocricus arellani
• †Aviculopecten
  • †Aviculopecten basilicus – or unidentified comparable form
  • †Aviculopecten sp. Ainformal
  • †Aviculopecten sp. Binformal
  • †Aviculopecten sp. Cinformal
  • †Aviculopecten sp. Dinformal
• †Aviculopinna
  • †Aviculopinna sp.
• †Avonia – report made of unidentified related form or using admittedly obsolete nomenclature
• †Avonia
  • †Avonia subhorrida
  • †Avonia subquadrata – type locality for species
• †Babylonites
  • †Babylonites acutus
  • †Babylonites sp.
• †Bactrites
  • †Bactrites mexicanus
• †Bakevellia
  • †Bakevellia sp.
• †Batenevia
  • †Batenevia spinosa – type locality for species
  • †Batenevia spinosa
• †Bathymyonia
  • †Bathymyonia nevadensis – or unidentified comparable form
  • †Bathymyonia nevadensis
• †Bathyuriscus
  • †Bathyuriscus sp.
• †Baturria
  • †Baturria mexicana
• †Baylea
  • †Baylea sp.
  • †Baylea sp. 1informal
  • †Baylea sp. 2informal
  • †Baylea yvanii – or unidentified related form
• †Beecheria
  • †Beecheria sp.
• †Bellerophon – tentative report
• †Bellerophon
  • †Bellerophon sp.
• †Bergaueria
  • †Bergaueria sp.
• †Bienvillia
  • †Bienvillia grandis – type locality for species
  • †Bienvillia tetragonalis
• †Bifodina
  • †Bifodina longifrons – type locality for species
• †Bitaunioceras
  • †Bitaunioceras coahuilense
• †Bonnia
  • †Bonnia sonora
• †Borestus
  • †Borestus sp.
• †Bristolia
  • †Bristolia bristolensis – or unidentified comparable form
• †Bryantodus
  • †Bryantodus sp.
• †Caborcella
  • †Caborcella arrojosensis
• †Calamites
  • †Calamites sp.
• †Callipteris
  • †Callipteris sp.
• †Camarophorella
  • †Camarophorella sp.
• †Camarotoechia
  • †Camarotoechia sp.
• †Cambrotubulus
  • †Cambrotubulus decurvatus – or unidentified comparable form
• †Cancrinella
  • †Cancrinella nunduva
  • †Cancrinella phosphatica
  • †Cancrinella rugosa – type locality for species
  • †Cancrinella rugosa
• †Caninia
  • †Caninia corniculum
  • †Caninia sp.
• †Caninophyllum
  • †Caninophyllum sonorense – type locality for species
• †Cassianoides
  • †Cassianoides sp.
• †Cavusgnathus
  • †Cavusgnathus unicornis
• †Chaetetes
  • †Chaetetes sp.
• †Chancelloria
  • †Chancelloria eros
  • †Chancelloria eros.
  • †Chancelloria sp.
• †Chaunactis
  • †Chaunactis sp. 1informal
• †Chelononia
  • †Chelononia straminea
• †Chonetes – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Chonetes deliciasensis
  • †Chonetes foshagi – type locality for species
  • †Chonetes monosensis – type locality for species
  • †Chonetes monosensis
  • †Chonetes sp.
• †Chonetinella
  • †Chonetinella gibberulus – type locality for species
  • †Chonetinella gibberulus
• †Cibecuia – tentative report
• †Cibecuia
  • †Cibecuia cedarensis
  • †Cibecuia sp.
• †Cibolites – type locality for genus
• †Cibolites
  • †Cibolites waageni – type locality for species
• †Claruscoscinus – tentative report
• †Claruscoscinus
  • †Claruscoscinus sp.
• †Cleiothyridina
  • †Cleiothyridina glenparkensis
  • †Cleiothyridina sp.
  • †Cleiothyridina tenuilineata – or unidentified comparable form
• †Climacammina
  • †Climacammina moelleriex gr.
• †Codonofusiella
  • †Codonofusiella extensa
• †Collemataria
  • †Collemataria americana – or unidentified comparable form
• †Collinia
  • †Collinia sp.
• †Composita
  • †Composita affinis
  • †Composita enormis
  • †Composita grandis – type locality for species
  • †Composita grandis – or unidentified comparable form
  • †Composita grandis
  • †Composita mira
  • †Composita obesa
  • †Composita sp.
• †Compressoproductus
  • †Compressoproductus pinniformis – or unidentified related form
  • †Compressoproductus pinniformis
• †Conocardium
  • †Conocardium sp.
• †Coolinia
  • †Coolinia sp.
• †Cordaites
  • †Cordaites sp.
• †Cordilleracyathus
  • †Cordilleracyathus meridianus – type locality for species
  • †Cordilleracyathus meridianus
• †Cordylodus
  • †Cordylodus angulatus
  • †Cordylodus oklahomensis
  • †Cordylodus proavus
• †Cornulites
  • †Cornulites sp.
• †Coscinocyathus
  • †Coscinocyathus sp.
• †Costispinifera
  • †Costispinifera costata
• †Cothodus – type locality for genus
  • †Cothodus sp.
• †Craniops
  • †Craniops sp.
• †Crurithyris
  • †Crurithyris levicula
• †Cruziana
  • †Cruziana sp.
• †Cruzina
  • †Cruzina sp.
• †Cyathaxonia
  • †Cyathaxonia cordillerensis – type locality for species
• †Cyclocaudex
  • †Cyclocaudex insaturatus
  • †Cyclocaudex jucundus
  • †Cyclocaudex typicus
• †Cyclocrista
  • †Cyclocrista cheneyi
  • †Cyclocrista martini
• †Cycloscapus
  • †Cycloscapus laevis
• †Cylindritopsis
  • †Cylindritopsis insolitus
• †Cyrtia
  • †Cyrtia sp.
• †Cyrtina
  • †Cyrtina burlingtonensis
• †Cyrtoniodus
  • †Cyrtoniodus sp.
• †Cyrtorostra
  • †Cyrtorostra varicostata – or unidentified comparable form
• †Cyrtospirifer – tentative report
  • †Cyrtospirifer latior
• †Cystelasma
  • †Cystelasma invaginatum – type locality for species
• †Dalejina
  • †Dalejina sp.
• †Dasysaria
  • †Dasysaria sp.
• †Declinognathodus
  • †Declinognathodus noduliferus
  • †Declinognathodus sp.
• †Delthyris – tentative report
• †Delthyris
  • †Delthyris sp.
• †Demarezites
  • †Demarezites sp.
• †Derbyia
  • †Derbyia arellanoi – type locality for species
  • †Derbyia arellanoi
  • †Derbyia elevata
  • †Derbyia elongata – type locality for species
  • †Derbyia elongata
  • †Derbyia nasuta
  • †Derbyia sp.
• †Derbyoides
  • †Derbyoides dunbari – or unidentified comparable form
• †Dichophyllum – or unidentified comparable form
  • †Dichophyllum sp.
• †Dicoelosia
  • †Dicoelosia sp.
• †Dictyoclostus – report made of unidentified related form or using admittedly obsolete nomenclature
• †Dictyoclostus
  • †Dictyoclostus sp.
• †Dictyocyathus
  • †Dictyocyathus sp.
• †Dictyonina
  • †Dictyonina minutipuncta
  • †Dictyonina sp.
• †Dielasma
  • †Dielasma floresi – type locality for species
  • †Dielasma floresi
  • †Dielasma magniforaminiferum
  • †Dielasma sp.
  • †Dielasma spatulatum – or unidentified related form
  • †Dielasma spatulatum – or unidentified comparable form
• †Dielasmoides – tentative report
• †Dielasmoides
  • †Dielasmoides sp.
• †Difuntites
  • †Difuntites hidius
• †Diplognathodus
  • †Diplognathodus coloradoensis
• †Diraphora
  • †Diraphora arrojosensis
• †Ditomopyge
  • †Ditomopyge whitei – or unidentified comparable form
  • †Ditomopyge whitei
• †Docoderma
  • †Docoderma sp.
• †Domatoceras
  • †Domatoceras sp.
• †Donaldina – or unidentified comparable form
  • †Donaldina robusta
• †Dorsisinus – type locality for genus
  • †Dorsisinus louisianensis
• †Dyoros
  • †Dyoros consanguineus – or unidentified comparable form
  • †Dyoros maya – type locality for species
• †Echinaria
  • †Echinaria knighti
• †Echinoconchella
  • †Echinoconchella elegans
• †Echinoconchus
  • †Echinoconchus zapoteco
• †Ectogrammysia
  • †Ectogrammysia prolata
• †Edmondia
  • †Edmondia ovata
  • †Edmondia sp.
• †Ehmaniella – tentative report
  • †Ehmaniella sp.
• †Elrathina – tentative report
  • †Elrathina sp.
• †Endothyra
  • †Endothyra bowmaniex gr.
• †Entactinia
  • †Entactinia parva
  • †Entactinia sp.
• †Enteletes
  • †Enteletes wordensis – or unidentified comparable form
• †Eoaraxoceras
  • †Eoaraxoceras ruzhencevi – type locality for species
  • †Eoaraxoceras ruzhencevi
• †Eoastarte
  • †Eoastarte subcircularis
• †Eobucania
  • †Eobucania mexicana – type locality for species
  • †Eobucania mexicana
• †Eoscaphelasma – tentative report
  • †Eoscaphelasma sp.
• †Eoschubertella
  • †Eoschubertella texana
• †Eospirifer
  • †Eospirifer sp.
• †Eostaffella
  • †Eostaffella grozdilovae
• †Eotuberitina
  • †Eotuberitina reitlingerae
• †Epiphyton
  • †Epiphyton sp.
• †Epithalassoceras
  • †Epithalassoceras ruzencevi
• †Equisetum
  • †Equisetum sp.
• †Ethmophyllum
  • †Ethmophyllum americanum
  • †Ethmophyllum cooperi
  • †Ethmophyllum whitneyi
• †Euchondria
  • †Euchondria cooperi – or unidentified comparable form
  • †Euchondria levicula – or unidentified comparable form
  • †Euchondria sp.
• †Eugonophyllum
  • †Eugonophyllum sp.
• †Eumedlicottia
  • †Eumedlicottia burckhardti
  • †Eumedlicottia whitneyi
• †Euomphalopterus
  • †Euomphalopterus sp.
• †Euomphalus
  • †Euomphalus kaibabensis – tentative report
  • †Euomphalus kaibabensis
  • †Euomphalus sp.
• †Euphemites
  • †Euphemites sp.
• †Euphemitopsis
  • †Euphemitopsis subpapillosa
• †Eurytreta – tentative report
• †Eurytreta
  • †Eurytreta campaniformis – or unidentified comparable form
  • †Eurytreta fillmorensis – or unidentified comparable form
  • †Eurytreta sabrinae – or unidentified comparable form
  • †Eurytreta sp.
• †Exallaspis
  • †Exallaspis sp. – type locality for species
• †Fallotaspis – or unidentified comparable form
  • †Fallotaspis sp.
• †Floricyclus
  • †Floricyclus angustimargo
  • †Floricyclus welleri
• †Fusulinella
  • †Fusulinella accuminata – or unidentified related form
  • †Fusulinella clarki
  • †Fusulinella llanoensis
  • †Fusulinella searighti – tentative report
  • †Fusulinella thompsoni
• †Gangamopteris – or unidentified comparable form
  • †Gangamopteris sp.
• †Geragnostus
  • †Geragnostus intermidius
• †Gigantopteris
  • †Gigantopteris sp.
• †Girtyella – tentative report
• †Girtyella
  • †Girtyella sp.
• †Girvanella – tentative report
• †Girvanella
  • †Girvanella mexicana
  • †Girvanella sinensis – or unidentified comparable form
  • †Girvanella sp.
• †Glabrocingulum
  • †Glabrocingulum coronatum – or unidentified comparable form
• †Globivalvulina
  • †Globivalvulina bulloides
• †Glossopleura
  • †Glossopleura leona
  • †Glossopleura sp.
• †Glossothyropsis
  • †Glossothyropsis magna – type locality for species
  • †Glossothyropsis magna
• †Glyptospira
  • †Glyptospira sonorensis – type locality for species
  • †Glyptospira sp.
• †Gnathodus
  • †Gnathodus bilineatus – tentative report
  • †Gnathodus defectus – tentative report
  • †Gnathodus girtyi
  • †Gnathodus sp.
• †Gogia
  • †Gogia granulosa
  • †Gogia sp.
• †Goniasma
  • †Goniasma sp.
  • †Goniasma terebra
• †Gothodus – type locality for genus
  • †Gothodus sp.
• †Graphoscyphia
  • †Graphoscyphia ramosa – type locality for species
  • †Graphoscyphia ramosa
• †Guadalupia
  • †Guadalupia sp.
• †Gymnagnostus – tentative report
• †Gymnagnostus
  • †Gymnagnostus congros – type locality for species
  • †Gymnagnostus mexicanus – type locality for species
• †Gypidula
  • †Gypidula sp.
• †Hartzina
  • †Hartzina sp.
• †Helcionella – tentative report
• †Helcionella
  • †Helcionella sp.
• †Helicoprion
  • †Helicoprion davisii
• †Hercosia
  • †Hercosia uddeni
• †Hertzina – tentative report
  • †Hertzina sp.
• †Heteralosia
  • †Heteralosia mexicana – type locality for species
• †Heterelasma
  • †Heterelasma contrerasi – type locality for species
  • †Heterelasma contrerasi
  • †Heterelasma shumardianum
• †Heterostelechus
  • †Heterostelechus keithi
• †Hindeodus
  • †Hindeodus cristulus – or unidentified comparable form
  • †Hindeodus minutus – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Hindeodus minutus
  • †Hindeodus sp.
  • †Hindeodus spiculus
• †Holosia – tentative report
  • †Holosia sp.
• †Hormathonema
  • †Hormathonema sp.
• †Howellella – tentative report
• †Howellella
  • †Howellella sp.
• †Hustedia
  • †Hustedia circularis
  • †Hustedia elongata – type locality for species
  • †Hustedia meekana – or unidentified comparable form
  • †Hustedia meekana
  • †Hustedia mexicana
  • †Hustedia pusilla
  • †Hustedia shumardi – type locality for species
  • †Hustedia shumardi
  • †Hustedia sp.
• †Hyolites
  • †Hyolites sp.
• †Hyolithellus
  • †Hyolithellus sp.
• †Hyolithes
  • †Hyolithes princepes – or unidentified related form
  • †Hyolithes sonora
  • †Hyolithes sp.
• †Idiognathodus
  • †Idiognathodus claviformis – tentative report
  • †Idiognathodus sinuosis
  • †Idiognathodus sp.
• †Idiognathoides
  • †Idiognathoides convexus
  • †Idiognathoides marginodosa
  • †Idiognathoides sinuatus – tentative report
  • †Idiognathoides sinuatus
  • †Idiognathoides sp.
• †Inglefieldia
  • †Inglefieldia imperfecta
• †Insolentitheca
  • †Insolentitheca horrida
• †Isorthis – tentative report
• †Isorthis
  • †Isorthis sp.
• †Kamaena – tentative report
  • †Kamaena sp.
• †Kansanella
  • †Kansanella neglecta
  • †Kansanella sp.
• †Karavankina
  • †Karavankina fasciata – or unidentified comparable form
• †Kargalites
  • †Kargalites mullerriedi – type locality for species
• †Kingoceras – type locality for genus
• †Kingoceras
  • †Kingoceras kingi – type locality for species
  • †Kingoceras kingi
• †Kinishbia
  • †Kinishbia nodosa
  • †Kinishbia sp.
• †Kistocare
  • †Kistocare corbinia
  • †Kistocare tontoensis
• †Kiwetinokia
  • †Kiwetinokia sp.
• †Kladognathus
  • †Kladognathus sp.
• †Kochaspis – tentative report
  • †Kochaspis sp.
• †Kochiproductus
  • †Kochiproductus peruvianus – or unidentified comparable form
• †Komia
  • †Komia eganensis
• †Koninckophyllum
  • †Koninckophyllum sp.
• †Kootenia
  • †Kootenia exilaxata
  • †Kootenia sp.
• †Kozlowskia
  • †Kozlowskia sp.
• †Krotovia
  • †Krotovia sp.
• †Lamellosathyris
  • †Lamellosathyris lamellosa
• †Lamprosterigma
  • †Lamprosterigma erathense
  • †Lamprosterigma mirificum
• †Latentifistula
  • †Latentifistula impella – or unidentified comparable form
  • †Latentifistula texana – or unidentified related form
  • †Latentifistula triacanthophora – or unidentified related form
• †Laudonia
  • †Laudonia sp.
• †Leiorhynchoidea – type locality for genus
• †Leiorhynchoidea
  • †Leiorhynchoidea amygdaloidea
  • †Leiorhynchoidea cloudi – type locality for species
  • †Leiorhynchoidea cloudi
  • †Leiorhynchoidea laevis – type locality for species
  • †Leiorhynchoidea laevis
  • †Leiorhynchoidea schucherti – type locality for species
  • †Leiorhynchoidea schucherti
• †Leiorhynchus
  • †Leiorhynchus bisulcatum
• †Leptaena
  • †Leptaena cooperi – type locality for species
  • †Leptaena rhomboidalis
  • †Leptaena sp.
• †Leptodesma
  • †Leptodesma falcata – or unidentified comparable form
  • †Leptodesma sp.
• †Leptodus
  • †Leptodus americana
• †Leptoplastides
  • †Leptoplastides marianus
• †Leptostrophia
  • †Leptostrophia sp.
• †Leurostega
  • †Leurostega aphelix – type locality for species
• †Limipecten
  • †Limipecten texanus – or unidentified comparable form
• †Linguella
  • †Linguella sp.
• †Lingulella – tentative report
  • †Lingulella sp.
• †Linnarsonia
  • †Linnarsonia sp.
• †Linnarssonia
  • †Linnarssonia arellanoi
  • †Linnarssonia rara
• †Linoproductus
  • †Linoproductus platyumbonus
  • †Linoproductus prattenianus – or unidentified comparable form
  • †Linoproductus sp.
  • †Linoproductus waagenianus
• †Liosotella – type locality for genus
• †Liosotella
  • †Liosotella angustata – type locality for species
  • †Liosotella angustata
  • †Liosotella magnirugosa – type locality for species
  • †Liosotella popei – tentative report
  • †Liosotella popei
  • †Liosotella rugosa – type locality for species
  • †Liosotella rugosa
  • †Liosotella sp.
  • †Liosotella subrugosa – type locality for species
  • †Liosotella subrugosa
• †Liroceras – tentative report
  • †Liroceras sp.
• †Lithostrotionella
  • †Lithostrotionella confluens – type locality for species
• †Lobatannularia
  • †Lobatannularia sp.
• †Lonchodus
  • †Lonchodus sp.
• †Lophophyllidium
  • †Lophophyllidium kayseri
  • †Lophophyllidium sp.
  • †Lophophyllidium zaphrentoidea
• †Luguella
  • †Luguella proveedorensis
• †Lyroschizodus
  • †Lyroschizodus orbicularis – or unidentified comparable form
• †Macropleura – tentative report
• †Macropleura
  • †Macropleura sp.
• †Marginifera
  • †Marginifera sp.
  • †Marginifera sp. 1informal
  • †Marginifera sp. 2informal
• †Marginovatia
  • †Marginovatia aureocollis
  • †Marginovatia minor
  • †Marginovatia pumila – or unidentified comparable form
• †Markocyathus – type locality for genus
  • †Markocyathus clementensis – type locality for species
• †Martinia
  • †Martinia martinezi – type locality for species
  • †Martinia martinezi
• †Mclearnites
  • †Mclearnites sp.
• †Medlicottia
  • †Medlicottia costellifera
  • †Medlicottia sp.
• †Meekella
  • †Meekella attenuata
  • †Meekella enigma – type locality for species
  • †Meekella enigma
  • †Meekella skenoides
  • †Meekella sp.
• †Megousia
  • †Megousia alata – type locality for species
  • †Megousia alata
• †Meristina – tentative report
• †Meristina
  • †Meristina sp.
• †Mesogondolella
  • †Mesogondolella bisselli
• †Mesopholidostrophia
  • †Mesopholidostrophia sp.
• †Metacrimites
  • †Metacrimites dunbari
  • †Metacrimites newelli
  • †Metacrimites plummeri – type locality for species
• †Metaldetes
  • †Metaldetes fischeri – or unidentified comparable form
• †Mexicaspis
  • †Mexicaspis difuntosensis
  • †Mexicaspis stenopyge
• †Mexicella
  • †Mexicella mexicana
• †Mexicoceras
  • †Mexicoceras guadalupense
• †Michelinia
  • †Michelinia sp.
• †Micragnostus
  • †Micragnostus curvata – type locality for species
  • †Micragnostus intermedius
• †Microdictyon
  • †Microdictyon sp.
• †Micromitra
  • †Micromitra sp.
• †Millerella
  • †Millerella sp.
• †Mizzia
  • †Mizzia sp.
• †Mooreanteris
  • †Mooreanteris perforatus
  • †Mooreanteris waylandensis
• †Myalina
  • †Myalina mieeki
  • †Myalina sp.
• †Naticopsis – tentative report
• †Naticopsis
  • †Naticopsis sp.
• †Neocrimites
  • †Neocrimites sp.
• †Neogeoceras
  • †Neogeoceras girtyi
• †Neognathodus
  • †Neognathodus bothrops
  • †Neognathodus caudatus
  • †Neognathodus medadultimus
  • †Neognathodus sp.
• †Neogondolella
  • †Neogondolella clarki
• †Neospirifer
  • †Neospirifer amphigyus – or unidentified comparable form
  • †Neospirifer sp.
  • †Neospirifer sp. 1informal
  • †Neospirifer sp. 2informal
• †Neozaphrentis
  • †Neozaphrentis tenella
• †Neuropteris – or unidentified comparable form
• †Neuropteris
  • †Neuropteris sp.
• †Nevadia – or unidentified comparable form
  • †Nevadia sp.
• †Nevadotheca
  • †Nevadotheca princeps – or unidentified related form
  • †Nevadotheca whitei
• †Nipperella – tentative report
  • †Nipperella sp.
• †Nisusia
  • †Nisusia sp.
• †Nodosageceras
  • †Nodosageceras nodosum
• †Nuanducosia
  • †Nuanducosia sulcata
• †Nucleospira
  • †Nucleospira sp.
• †Nucula – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Nucula sp.
  • †Nucula spp.
• †Nuculopsis – tentative report
  • †Nuculopsis sp.
• †Oaxaquiatreta – type locality for genus
• †Oaxaquiatreta
  • †Oaxaquiatreta labrifera – type locality for species
  • †Oaxaquiatreta labrifera
  • †Oaxaquiatreta sp.
• †Obliquipecten
  • †Obliquipecten sp.
• †Odontopteris – or unidentified comparable form
• †Odontopteris
  • †Odontopteris lingulata
  • †Odontopteris sp.
• †Olenellus
  • †Olenellus fremonti
  • †Olenellus puertoblancoensis
• †Olenllus
  • †Olenllus truemani
• †Omphalotrochus – tentative report
  • †Omphalotrochus sp. Ainformal
• †Onchocephalus
  • †Onchocephalus buelnaensis
  • †Onchocephalus mexicanus
• †Oneotodus
  • †Oneotodus simplex
  • †Oneotodus tenuis
• †Onychopyge
  • †Onychopyge sculptura – type locality for species
• †Orbiculoidea
  • †Orbiculoidea ovalis – type locality for species
  • †Orbiculoidea sp.
  • †Orbiculoidea sp. 1informal
  • †Orbiculoidea sp. 2informal
  • †Orbiculoidea utahensis – or unidentified comparable form
• †Orthonema
  • †Orthonema sp.
• †Orthonychia
  • †Orthonychia sp.
  • †Orthonychia sp. Ainformal
• †Orthotheca
  • †Orthotheca buelna
• †Oryctocara
  • †Oryctocara sp.
• †Oryctocephalus
  • †Oryctocephalus sp.
• †Ottenbyella – tentative report
  • †Ottenbyella sp. Ainformal
  • †Ottenbyella sp. Binformal
• †Oulodus
  • †Oulodus sp.
• †Ovatia
  • †Ovatia muralis
• †Ozarkodina
  • †Ozarkodina sp.
• †Pachyaspis
  • †Pachyaspis deborra
  • †Pachyaspis isabella
  • †Pachyaspis sp.
• †Pachysphaerina
  • †Pachysphaerina pachysphaerica
• †Pagetia
  • †Pagetia sp.
• †Palaeolima – tentative report
  • †Palaeolima sp.
• †Palaeonucula – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Palaeonucula sp.
• †Palaeophycus
  • †Palaeophycus sp.
• †Palmericyathellus
  • †Palmericyathellus undatus – type locality for species
• †Palmericyathus
  • †Palmericyathus americanus
• †Parabolina
  • †Parabolina argentina – or unidentified comparable form
• †Parabolinella
  • †Parabolinella argentinensis
  • †Parabolinella prolata – type locality for species
  • †Parabolinella tumifrons – type locality for species
  • †Parabolinella variabilis – type locality for species
• †Paraceltites
  • †Paraceltites altudensis
  • †Paraceltites ornatus
  • †Paraceltites rectangularis – type locality for species
• †Parachaetetes
  • †Parachaetetes sp.
• †Parafusulina
  • †Parafusulina antimonioensis – type locality for species
  • †Parafusulina boesei – or unidentified related form
  • †Parafusulina bosei
  • †Parafusulina deliciasensis
  • †Parafusulina sellardsi
  • †Parafusulina sp.
  • †Parafusulina spissisepta
• †Parallelodon
  • †Parallelodon sulcatus
  • †Parallelodon tenuistriatus
• †Paramarginifera
  • †Paramarginifera sp.
• †Paranacyathus
  • †Paranacyathus polycladus – type locality for species
  • †Paranacyathus polycladus
• †Paranorella – type locality for genus
• †Paranorella
  • †Paranorella imperialis – type locality for species
  • †Paranorella imperialis
• †Pararachnastraea
  • †Pararachnastraea amsburyi – type locality for species
  • †Pararachnastraea dyeri – type locality for species
• †Paraspiriferina
  • †Paraspiriferina convexa – type locality for species
• †Parehmania
  • †Parehmania sp.
• †Parethmophyllum
  • †Parethmophyllum cooperi
• †Parspaniocrinus – type locality for genus
  • †Parspaniocrinus beinerti – type locality for species
• †Paterina
  • †Paterina sp.
• †Paucispinifera
  • †Paucispinifera sp.
• †Pecopteris
  • †Pecopteris arborescens
  • †Pecopteris sp.
  • †Pecopteris unita
• †Peltocare
  • †Peltocare norvegicum
• †Peniculauris
  • †Peniculauris subcostata – or unidentified comparable form
• †Pentagonopterix
  • †Pentagonopterix insculptus
• †Pentamerus
  • †Pentamerus sp.
• †Pentaridica
  • †Pentaridica simplicis
• †Perditocardinia
  • †Perditocardinia dubia – or unidentified comparable form
• †Permophorus
  • †Permophorus oblongus – or unidentified comparable form
  • †Permophorus sonorensis – type locality for species
  • †Permophorus sp.
  • †Permophorus spinulosa
• †Peronopsis
  • †Peronopsis bonnerensis – or unidentified comparable form
  • †Peronopsis sp.
• †Perrinites
  • †Perrinites hilli
• †Phacistognathus
  • †Phacistognathus muricatus
• †Pharostomina
  • †Pharostomina mexicana – type locality for species
• †Plagioglypta
  • †Plagioglypta sp.
• †Plagiogmus
  • †Plagiogmus sp.
• †Planolites
  • †Planolites sp.
• †Platyceras
  • †Platyceras sp.
• †Platychisma
  • †Platychisma sp.
• †Plectelasma
  • †Plectelasma guadalupense
• †Pleurodictyum
  • †Pleurodictyum subramosum – type locality for species
• †Pleurotomaria – tentative report
  • †Pleurotomaria sp. Ainformal
  • †Pleurotomaria sp. Binformal
  • †Pleurotomaria sp. Cinformal
• †Plicatolinella
  • †Plicatolinella ocula – type locality for species
• †Plicochonetes
  • †Plicochonetes geniculatus
• †Poleumita
  • †Poleumita sp.
• †Polidevcia
  • †Polidevcia obesa
• †Polydiexodina
  • †Polydiexodina capitanensis
  • †Polydiexodina mexicana – type locality for species
  • †Polydiexodina shumardi
  • †Polydiexodina sp.
• †Pontisia
  • †Pontisia stehlii – or unidentified related form
• †Posidoniella
  • †Posidoniella sp.
• †Praeskinnerella
  • †Praeskinnerella guembeli – or unidentified related form
• †Preptopremnum
  • †Preptopremnum laeve
  • †Preptopremnum rugosum
• †Prodentalium
  • †Prodentalium canna
• †Promytilus
  • †Promytilus sp.
• †Propinacoceras
  • †Propinacoceras sp.
• †Prorichthofenia
  • †Prorichthofenia sp.
• †Protopharetra
  • †Protopharetra sp.
• †Prototreta
  • †Prototreta sp.
• †Proveedoria
  • †Proveedoria startquistae
• †Pseudagathiceras
  • †Pseudagathiceras difuntense
  • †Pseudagathiceras spinosum – type locality for species
• †Pseudagnostus
  • †Pseudagnostus sp.
• †Pseudomulceodens
  • †Pseudomulceodens cancellatus
• †Pseudostaffella
  • †Pseudostaffella sp.
• †Pseudovermiporella
  • †Pseudovermiporella sp.
• †Ptarmigania
  • †Ptarmigania bispinosa
• †Pterinopectinella
  • †Pterinopectinella sp.
• †Ptychoparia
  • †Ptychoparia clusia – or unidentified related form
• †Pugnoides – tentative report
  • †Pugnoides sp.
• †Punctospirifer
  • †Punctospirifer gigas
  • †Punctospirifer globosa
  • †Punctospirifer sp.
  • †Punctospirifer sulcifer – type locality for species
• †Pycnoidocyathus
  • †Pycnoidocyathus eminetus – type locality for species
• †Pywackia – type locality for genus
  • †Pywackia baileyi – type locality for species
• †Quadrochonetes
  • †Quadrochonetes girtyi – or unidentified related form
  • †Quadrochonetes girtyi – or unidentified comparable form
• †Rauserella – type locality for genus
• †Rauserella
  • †Rauserella erratica – type locality for species
  • †Rauserella erratica
• †Renalcis
  • †Renalcis sp.
• †Resserella
  • †Resserella sp.
• †Reticularia
  • †Reticularia cooperensis
• †Reticulariina
  • †Reticulariina laxa
  • †Reticulariina sonorensis – type locality for species
  • †Reticulariina sonorensis
• †Reticulatia
  • †Reticulatia sp.
• †Retilamina
  • †Retilamina sp.
• †Rhineoderma
  • †Rhineoderma nystii – or unidentified comparable form
• †Rhipidomella
  • †Rhipidomella missouriensis – or unidentified comparable form
• †Rhynchonella
  • †Rhynchonella stricklandi – or unidentified related form
• †Rhynchopora
  • †Rhynchopora bicostata – type locality for species
  • †Rhynchopora sp.
  • †Rhynchopora taylori
• †Richardsonella
  • †Richardsonella variagranula – type locality for species
• †Rioceras
  • †Rioceras minore
  • †Rioceras oxacaense
• †Roadoceras
  • †Roadoceras haacki
  • †Roadoceras roadense
• †Rotiphyllum
  • †Rotiphyllum occidentale – type locality for species
  • †Rotiphyllum vesiculosum – type locality for species
• †Rotundocyathus – tentative report
  • †Rotundocyathus pusillus – type locality for species
  • †Rotundocyathus pusillus
• †Rusophycus
  • †Rusophycus sp.
• †Ruzhencevispongus
  • †Ruzhencevispongus sp.
• †Salterella
  • †Salterella maccullochi
  • †Salterella pulchella – or unidentified comparable form
  • †Salterella sp.
• †Sanguinolites – tentative report
• †Sanguinolites
  • †Sanguinolites sp.
• †Saukia
  • †Saukia globosa – type locality for species
• †Scenella
  • †Scenella reticulata – or unidentified comparable form
• †Schellwienella
  • †Schellwienella umbonata – type locality for species
• †Schizodus
  • †Schizodus parvulus – type locality for species
  • †Schizodus parvulus
  • †Schizodus sp.
  • †Schizodus texanus
  • †Schizodus ulrichi – or unidentified comparable form
• †Schizophoria
  • †Schizophoria sulcata – type locality for species
• †Schuchertella
  • †Schuchertella sp.
• †Schwagerina
  • †Schwagerina crassitectoria
  • †Schwagerina sp.
• †Scolicia
  • †Scolicia sp.
• †Scytinoptera
  • †Scytinoptera mexicana – type locality for species
• †Semitreta
  • †Semitreta sp.
• †Septimyalina
  • †Septimyalina burmai
  • †Septimyalina sp.
• †Serpulospira
  • †Serpulospira paradoxus – or unidentified comparable form
• †Sestropoma
  • †Sestropoma mexicanum – type locality for species
• †Shamovella
  • †Shamovella sp.
• †Shumardia
  • †Shumardia alata – type locality for species
  • †Shumardia ctenata – type locality for species
• †Sinotubulites – tentative report
• †Sinotubulites
  • †Sinotubulites cienegensis – type locality for species
  • †Sinotubulites cienegensis
  • †Sinotubulites sp.
• †Sinuatella – tentative report
  • †Sinuatella sp.
• †Skenidioides
  • †Skenidioides sp.
• †Skolithos
  • †Skolithos sp.
• †Solenomorpha – tentative report
  • †Solenomorpha sp.
• †Solenopora
  • †Solenopora texana
• †Sombrerella
  • †Sombrerella mexicana
• †Sphaerirhynchia
  • †Sphaerirhynchia sp.
• †Sphaerocodium
  • †Sphaerocodium sp.
• †Sphenopteris – tentative report
  • †Sphenopteris sp.
• †Spirifer
  • †Spirifer sp.
• †Spiriferella – tentative report
• †Spiriferella
  • †Spiriferella propria
  • †Spiriferella scobinoidea – type locality for species
  • †Spiriferella scobinoidea
  • †Spiriferella sp. 1informal
• †Spiriferellina
  • †Spiriferellina hilli
  • †Spiriferellina sp.
  • †Spiriferellina sp. 2informal
  • †Spiriferellina tricosa – or unidentified comparable form
  • †Spiriferellina tricosa
• †Stachella
  • †Stachella sp.
• †Stacheoceras
  • †Stacheoceras gemmellaroi – type locality for species
  • †Stacheoceras gemmellaroi
  • †Stacheoceras toumanskayae
• †Staffella
  • †Staffella fountaini
  • †Staffella powwowensis
  • †Staffella subacuta
• †Stearoceras
  • †Stearoceras sp.
• †Stenopareia
  • †Stenopareia sp. – type locality for species
• †Stenoscisma
  • †Stenoscisma indentata
  • †Stenoscisma kingi – type locality for species
  • †Stenoscisma sp.
• †Stevocyathus – type locality for genus
  • †Stevocyathus elictus – type locality for species
• †Straparollus – tentative report
• †Straparollus
  • †Straparollus sp.
  • †Straparollus sp. Ainformal
• †Streblochondria
  • †Streblochondria sculptilis
• †Streblopteria
  • †Streblopteria montpelierensis
  • †Streblopteria sp.
• †Streptognathodus
  • †Streptognathodus bellus
  • †Streptognathodus sp.
• †Streptorhynchus
  • †Streptorhynchus sp.
• †Strigogoniatites
  • †Strigogoniatites kingi – type locality for species
• †Strobeus
  • †Strobeus welleri – or unidentified comparable form
• †Strophonella – tentative report
• †Strophonella
  • †Strophonella euglypha – or unidentified comparable form
  • †Strophonella sp.
• †Sweetina – tentative report
• †Sweetina
  • †Sweetina sp.
• †Sweetognathus
  • †Sweetognathus whitei
• †Syringocnema – tentative report
  • †Syringocnema sp.
• †Syringopora
  • †Syringopora sp. – type locality for species
  • †Syringopora tubifera – type locality for species
• †Syringothyris – tentative report
• †Syringothyris
  • †Syringothyris sp.
  • †Syringothyris typa – or unidentified comparable form
• †Taeniopteris
  • †Taeniopteris sp.
• †Tapuritreta
  • †Tapuritreta reclinata – type locality for species
• †Texarina
  • †Texarina wordensis
• †Thamnosia
  • †Thamnosia depressa – type locality for species
  • †Thamnosia depressa
• †Timaniella
  • †Timaniella pseudocamerata – or unidentified comparable form
  • †Timaniella pseudocamerata
• †Timorites
  • †Timorites schucherti
  • †Timorites sp.
• †Tinaspis
  • †Tinaspis totoyaca – type locality for species
• †Torynifer
  • †Torynifer pseudolineatus
• †Trachydomia
  • †Trachydomia sp.
• †Treptichnus
  • †Treptichnus pedum
• †Tribloceras
  • †Tribloceras digonum
• †Triticites
  • †Triticites cullomensis
  • †Triticites piloncillosensis – type locality for species
  • †Triticites sp.
• †Trochophyllum
  • †Trochophyllum sp.
• †Tropidelasma
  • †Tropidelasma gregarium – or unidentified comparable form
• †Tropidodiscus
  • †Tropidodiscus sp.
• †Tumulocyathellus
  • †Tumulocyathellus minor – type locality for species
• †Tylothyris – tentative report
  • †Tylothyris sp.
• †Uncinulinoides
  • †Uncinulinoides indentatus – or unidentified comparable form
• †Uncinunellina – tentative report
  • †Uncinunellina pulchra – type locality for species
  • †Uncinunellina pulchra
• †Validopteris
  • †Validopteris sp.
• †Waagenoceras
  • †Waagenoceras dieneri
  • †Waagenoceras girtyi
  • †Waagenoceras karpinskyi – type locality for species
  • †Waagenoceras karpinskyi
• †Waagenoconcha
  • †Waagenoconcha sp.
• †Walchia – or unidentified comparable form
• †Walchia
  • †Walchia sp.
• †Wanneria – tentative report
• †Wanneria
  • †Wanneria mexicana
  • †Wanneria sp.
  • †Wanneria walcottana
• †Warthia
  • †Warthia sp.
  • †Warthia sp. Ainformal
• †Wellerella
  • †Wellerella hemiplicata – type locality for species
  • †Wellerella hemiplicata
  • †Wellerella lemasi – type locality for species
  • †Wellerella lemasi
  • †Wellerella rotunda – type locality for species
  • †Wellerella sp.
• †Wimanella
  • †Wimanella sp.
• †Worthenia – tentative report
• †Worthenia
  • †Worthenia crenulata – or unidentified comparable form
  • †Worthenia sp.
• †Xenodiscus
  • †Xenodiscus wanneri
• †Xestosia
  • †Xestosia schucherti
• †Yakovlevia
  • †Yakovlevia deminutiva
  • †Yakovlevia sp.
• †Yogelgnathus
  • †Yogelgnathus postcampbelli
• †Zacanthoides
  • †Zacanthoides holopygus – or unidentified related form
• †Zidella – tentative report
  • †Zidella sp.

Mesozoic

• †Acaeniotyle
  • †Acaeniotyle parva
  • †Acaeniotyle umbilicata
• †Acanthoceras
  • †Acanthoceras camachoense
  • †Acanthoceras camattei – or unidentified comparable form
  • †Acanthoceras sp.
• †Acanthocircus
  • †Acanthocircus minimus – or unidentified comparable form
  • †Acanthocircus minispineus
  • †Acanthocircus moctezumaensis – or unidentified comparable form
  • †Acanthocircus moctezumaensis
  • †Acanthocircus sp.
  • †Acanthocircus sp. Ainformal
  • †Acanthocircus sp. Binformal
  • †Acanthocircus trizonalis – tentative report
  • †Acanthocircus yaoi
• †Acanthocoenia
  • †Acanthocoenia neocomiensis
• †Acanthodiscus – or unidentified comparable form
• †Acanthodiscus
  • †Acanthodiscus magnificus – or unidentified comparable form
  • †Acanthodiscus magnificus
  • †Acanthodiscus radiatus
• †Acanthohoplites
  • †Acanthohoplites abichiaff.
  • †Acanthohoplites aschiltaensis
  • †Acanthohoplites ashiltaensisaff.
  • †Acanthohoplites crassicostatusaff.
  • †Acanthohoplites gragasensisaff.
  • †Acanthohoplites janneliaff.
  • †Acanthohoplites potreritensis
  • †Acanthohoplites sp.informal
  • †Acanthohoplites sp.
  • †Acanthohoplites uhligi – or unidentified comparable form
• †Acanthoxenophora – type locality for genus
• †Acanthoxenophora
  • †Acanthoxenophora sinuosa – type locality for species
  • †Acanthoxenophora sinuosa
• †Acastea
  • †Acastea acer
  • †Acastea bipes
  • †Acastea duraaff.
  • †Acastea dura – or unidentified comparable form
  • †Acastea dura
  • †Acastea minispinea
  • †Acastea prolixa
• †Acicularia
  • †Acicularia americana
• †Acila
  • †Acila demessa
  • †Acila princeps
• †Acrioceras
  • †Acrioceras sp.
• †Acrosmilia
  • †Acrosmilia minima
• †Acteonella
  • †Acteonella borneensis
  • †Acteonella fusiformis
  • †Acteonella parvus
  • †Acteonella robinsoni
• †Acteonina
  • †Acteonina tehuacanensis
• †Actinacis
  • †Actinacis haueri
  • †Actinacis magna
  • †Actinacis martiniana
• †Actinaraea
  • †Actinaraea michoacanensis – type locality for species
• †Actinastraea
  • †Actinastraea pseudominima
• †Actinastrea
  • †Actinastrea bernensis
  • †Actinastrea guadalupae
  • †Actinastrea lacvivieri – type locality for species
  • †Actinastrea reticulata
  • †Actinastrea sp.
  • †Actinastrea tenuisepta
• †Actinhelia
  • †Actinhelia elegans
• †Actinostreon
  • †Actinostreon gregareum
• †Actinostromaria
  • †Actinostromaria sp.
• †Acusten
  • †Acusten ordinarium
• †Adelodonex
  • †Adelodonex altus
• †Adocus
  • †Adocus sp.
• †Aeger
  • †Aeger hidalguensis – type locality for species
• †Aesculiidites
  • †Aesculiidites sp.
• †Agathelia
  • †Agathelia urgonica
• †Agathodonta
  • †Agathodonta brooksi
• †Agerchlamys
  • †Agerchlamys wunschae
• †Akatopora
  • †Akatopora sp.
• †Aklydonion
  • †Aklydonion murrayae
• †Albertosaurus – or unidentified comparable form
  • †Albertosaurus sp.
• †Alethopteris
  • †Alethopteris sp.
  • †Alethopteris whitneyi
• †Alexornis – type locality for genus
  • †Alexornis antecedens – type locality for species
• †Algericeras
  • †Algericeras proratum
  • †Algericeras remolinense – type locality for species
• †Alpinophragmum – or unidentified comparable form
  • †Alpinophragmum sp.
• †Alpinophyllia
  • †Alpinophyllia flexuosa
• †Alveosepta
  • †Alveosepta jaccardi
• †Amaea
  • †Amaea sp.
• †Amaurellina
  • †Amaurellina guerrera
• †Amauropsis
  • †Amauropsis bulbiformis – or unidentified comparable form
  • †Amauropsis japonica
• †Ammodiscus
  • †Ammodiscus incertus
• †Ammonites
  • †Ammonites oolithicus – or unidentified comparable form
  • †Ammonites sp.
  • †Ammonites subradiatus – or unidentified comparable form
  • †Ammonites subradiatus
• †Amphekepubis – type locality for genus
  • †Amphekepubis johnsoni – type locality for species
• †Amphiastrea
  • †Amphiastrea aethiopica
• †Amphibrachium
  • †Amphibrachium petersoni
• †Amphidonte
  • †Amphidonte obliquata
  • †Amphidonte sp.
• †Amphitriscoelus
  • †Amphitriscoelus pluriloculata
  • †Amphitriscoelus waringi
• †Amphiuraaff.
  • †Amphiura sp.
• †Ampullina
  • †Ampullina lepta – or unidentified comparable form
• †Anahamulina
  • †Anahamulina sp.
• †Anaticapitula – tentative report
  • †Anaticapitula anatiformis
• †Anatina
  • †Anatina sp.
• †Anchura – tentative report
• †Anchura
  • †Anchura andersoni
  • †Anchura denticulata – type locality for species
  • †Anchura gibbera – type locality for species
  • †Anchura gibbera
  • †Anchura hannai
  • †Anchura johnsoni
  • †Anchura sp.
• †Ancyloceras – report made of unidentified related form or using admittedly obsolete nomenclature
• †Ancyloceras
  • †Ancyloceras camachoense
  • †Ancyloceras matheroni – or unidentified comparable form
  • †Ancyloceras sp.
  • †Ancyloceras vandenheckii
  • †Ancyloceras zacatecanum
• †Andiceras
  • †Andiceras monserrati
• †Angaria
  • †Angaria gwynae
• †Anglonautilus
  • †Anglonautilus catarinae – type locality for species
  • †Anglonautilus catarinae
• †Angulaticeras – tentative report
  • †Angulaticeras sp.
• †Animonithyris
  • †Animonithyris dorenbergi
• †Anisoceras
  • †Anisoceras armatum – or unidentified comparable form
  • †Anisoceras neohispanicum
• †Ankylosphenodon – type locality for genus
  • †Ankylosphenodon pachyostosus – type locality for species
• †Anomia
  • †Anomia mexicana
  • †Anomia micronema
  • †Anomia sp.
• †Anomozamites
  • †Anomozamites sp.
• †Anthostylis
  • †Anthostylis acanthophora
  • †Anthostylis sp.
• †Antiguastrea
  • †Antiguastrea cellulosa
• †Antillocaprina
  • †Antillocaprina trilobata – type locality for species
  • †Antillocaprina trilobata
• †Antiptychina – tentative report
• †Antiptychina
  • †Antiptychina formosa
  • †Antiptychina lata
  • †Antiptychina milleriedi
  • †Antiptychina muellerriedi
• †Antiquilima
  • †Antiquilima nodulosa – or unidentified comparable form
• †Aphaea
  • †Aphaea leia
• †Aphlebia
  • †Aphlebia sonorensis
• †Aphrodina
  • †Aphrodina tippana
• †Apocladophyllia
  • †Apocladophyllia birleyae
• †Aporrhais – tentative report
• †Aporrhais
  • †Aporrhais sp.
  • †Aporrhais subfusiformisaff.
• †Aptyxiella
  • †Aptyxiella boehmi
  • †Aptyxiella parallela
  • †Aptyxiella subula – or unidentified comparable form
  • †Aptyxiella subula
• †Arabicodium
  • †Arabicodium texana
• †Araripichthys
  • †Araripichthys weberi – type locality for species
• †Araucaria – or unidentified comparable form
  • †Araucaria sp.
• †Araucarioxylon
  • †Araucarioxylon mexicana
  • †Araucarioxylon sp.
• †Arca
  • †Arca sp.
• †Arcestes
  • †Arcestes sp.
• †Archaeocenosphaera
  • †Archaeocenosphaera ruesti
• †Archaeodictyomitra
  • †Archaeodictyomitra shengi
  • †Archaeodictyomitra sixi
  • †Archaeodictyomitra sp.
  • †Archaeodictyomitra wangi
• †Archaeohagiastrum
  • †Archaeohagiastrum exile
  • †Archaeohagiastrum minutum – or unidentified comparable form
• †Archaeoniscus
  • †Archaeoniscus aranguthyorum
• †Archaeopus
  • †Archaeopus mexicanus – type locality for species
  • †Archaeopus mexicanus
• †Archaeospongoprunum
  • †Archaeospongoprunum coyotense – type locality for species
  • †Archaeospongoprunum coyotense
• †Arcomytilus
  • †Arcomytilus sp.
• †Arctica – report made of unidentified related form or using admittedly obsolete nomenclature
• †Arctica – or unidentified comparable form
• †Arctica
  • †Arctica bernensis
  • †Arctica sanzi
  • †Arctica sp.
• †Arctotis
  • †Arctotis cretacea
• †Arecipites
  • †Arecipites sp.
• †Ares
  • †Ares cuniculiformis
  • †Ares mexicoensis – type locality for species
  • †Ares sutherlandi
• †Astacodes
  • †Astacodes sp.
• †Astacolus
  • †Astacolus nuda
• †Astarte
  • †Astarte antipodum – or unidentified comparable form
  • †Astarte durangensis
  • †Astarte gracilicostula
  • †Astarte similis
  • †Astarte sp.
  • †Astarte subcostata
• †Astartemya
  • †Astartemya sp.
• †Asterotheca
  • †Asterotheca meriani
  • †Asterotheca santaclaraeex gr.
  • †Asterotheca santaclarae
  • †Asterotheca sp.
• †Astieria
  • †Astieria astieriformis
  • †Astieria bangei
  • †Astieria neohispanica
  • †Astieria raricostata
• †Astraeofungia
  • †Astraeofungia felixi
• †Astraeomorpha
  • †Astraeomorpha sonorensis – type locality for species
  • †Astraeomorpha sonorensis
• †Astrocoenia
  • †Astrocoenia sp.
• †Atalantria
  • †Atalantria emmela
  • †Atalantria sp.informal
• †Atocatle – type locality for genus
  • †Atocatle ranulfoi – type locality for species
• †Atreta
  • †Atreta sp.
• †Audienusina
  • †Audienusina fourcadei
• †Aulacomyella
  • †Aulacomyella neogeae
• †Aulastraeopora
  • †Aulastraeopora harrisi
  • †Aulastraeopora sp.
• †Avicula
  • †Avicula sp.
• †Axelrodichthys
  • †Axelrodichthys araripensis – or unidentified comparable form
• †Baculites
  • †Baculites haresi
  • †Baculites occidentalisaff.
  • †Baculites sp.
  • †Baculites sp. 2informal
  • †Baculites taylorensis
  • †Baculites yokoyamai
• †Bagotum
  • †Bagotum funiculum – type locality for species
  • †Bagotum funiculum
  • †Bagotum helmetense
  • †Bagotum kimbroughi – type locality for species
  • †Bagotum kimbroughi
  • †Bagotum modestum
• †Bairdia
  • †Bairdia sp.
• †Bakevellia
  • †Bakevellia sp. Ainformal
• †Balanocrinus
  • †Balanocrinus mexicanus
• †Barrettia
  • †Barrettia gigas
  • †Barrettia monilifera
  • †Barrettia multilirata
  • †Barrettia ruseae – or unidentified comparable form
• †Barroisiceras
  • †Barroisiceras alstadenense – or unidentified comparable form
  • †Barroisiceras sp.
• †Baryphyllia
  • †Baryphyllia confusa – type locality for species
  • †Baryphyllia confusa
• †Barysmilia
  • †Barysmilia trechmanni
• †Beatricea – tentative report
• †Beatricea
  • †Beatricea baroni
  • †Beatricea christovalensis
  • †Beatricea sanpabloensis – type locality for species
  • †Beatricea sanpabloensis
• †Belemnites
  • †Belemnites sp.
• †Belenostomus
  • †Belenostomus sp.
• †Bellifusus
  • †Bellifusus curvicostatus
• †Belliscala
  • †Belliscala sp.
• †Berriasella – tentative report
  • †Berriasella sp.
• †Betraccium
  • †Betraccium smithi – type locality for species
  • †Betraccium smithi
• †Beudanticeras
  • †Beudanticeras beudanti
• †Biradiolites
  • †Biradiolites cancellatus
  • †Biradiolites rudissimus
  • †Biradiolites sp.
• †Bivallupus
  • †Bivallupus longoriai
  • †Bivallupus mexicanusaff.
  • †Bivallupus mexicanus
  • †Bivallupus oppositus
  • †Bivallupus primigenius
  • †Bivallupus sp.
• †Blanforidceras – tentative report
  • †Blanforidceras sp.
• †Blastozopsammia – type locality for genus
  • †Blastozopsammia guerreroterion – type locality for species
• †Bocaconodon – type locality for genus
  • †Bocaconodon tamaulipensis – type locality for species
• †Bocatherium
  • †Bocatherium mexicanum – type locality for species
• †Bochianites – tentative report
• †Bochianites
  • †Bochianites sp.
• †Bolivinoides
  • †Bolivinoides draco
• †Bostrychoceras
  • †Bostrychoceras polyplocum
• †Bournonia
  • †Bournonia cardenasensis
• †Brachymeandra
  • †Brachymeandra sp.
• †Brachyphyllum
  • †Brachyphyllum sp.
• †Brachyseris
  • †Brachyseris chellalensis
• †Branchiocarcinus
  • †Branchiocarcinus cornatus
• †Brasilichnium – or unidentified comparable form
  • †Brasilichnium sp.
• †Buccicrenata
  • †Buccicrenata subgoodlandensis
• †Buchia
  • †Buchia concentrica
• †Buchotrigonia
  • †Buchotrigonia reesidei
• †Budaiceras
  • †Budaiceras hyatti
• †Burckhardtites
  • †Burckhardtites ehlersi
  • †Burckhardtites nazasensis
  • †Burckhardtites sp.
• †Caenocidaris
  • †Caenocidaris cucumifera – or unidentified comparable form
• †Caestocorbula
  • †Caestocorbula crassiplica
• †Calamophylliopsis
  • †Calamophylliopsis fotisalensis – or unidentified comparable form
• †Calcisphaerula
  • †Calcisphaerula innomiata
• †Callianassa – or unidentified comparable form
• †Callianassa
  • †Callianassa sp.
  • †Callianassa tepetatensis
• †Calliconites
  • †Calliconites drakei – or unidentified comparable form
  • †Calliconites milleri – type locality for species
• †Calliomphalus
  • †Calliomphalus argenteus
  • †Calliomphalus decoris – or unidentified comparable form
  • †Calliomphalus mexcalensis
  • †Calliomphalus sp.
• †Calliostoma
  • †Calliostoma craginiaff.
• †Calva
  • †Calva crassa
  • †Calva peninsularis
  • †Calva sp.
• †Calycoceras
  • †Calycoceras sp.
• †Calyptraphorus – tentative report
  • †Calyptraphorus sp.
• †Camptodocis
  • †Camptodocis araneola – or unidentified comparable form
• †Camptonectes
  • †Camptonectes sp.
• †Cancellaria
  • †Cancellaria sp.
• †Caneta
  • †Caneta hsui – or unidentified comparable form
• †Canoptum
  • †Canoptum anulatum
  • †Canoptum dixoni
  • †Canoptum pessagnoi
  • †Canoptum sp.
• †Cantalum
  • †Cantalum holdsworthi – type locality for species
  • †Cantalum holdsworthi
• †Canutus – tentative report
• †Canutus
  • †Canutus bolesi – type locality for species
  • †Canutus diegoi – type locality for species
  • †Canutus diegoi
  • †Canutus rockfishensisaff.
• †Capnodoce
  • †Capnodoce crystallina – type locality for species
  • †Capnodoce crystallina
  • †Capnodoce primaria – type locality for species
  • †Capnodoce primaria
  • †Capnodoce sp.
  • †Capnodoce venusta – type locality for species
  • †Capnodoce venusta
• †Capnuchosphaera
  • †Capnuchosphaera lenticulata – type locality for species
  • †Capnuchosphaera lenticulata
  • †Capnuchosphaera mexicanaaff.
  • †Capnuchosphaera mexicana – type locality for species
  • †Capnuchosphaera mexicana
  • †Capnuchosphaera sp.
• †Caprina
  • †Caprina massei – type locality for species
  • †Caprina massei
  • †Caprina sp.
• †Caprinuloidea – tentative report
• †Caprinuloidea
  • †Caprinuloidea costata
  • †Caprinuloidea gracilis
  • †Caprinuloidea perfecta
  • †Caprinuloidea sp.
• †Carcharias
  • †Carcharias sp.
• †Carcineretes
  • †Carcineretes planetarius
  • †Carcineretes plantarius
• †Cardinia – tentative report
• †Cardinia
  • †Cardinia concinna
  • †Cardinia sp. Ainformal
• †Cardinioides
  • †Cardinioides sp.
• †Cardium
  • †Cardium costae
  • †Cardium cottaldinum – or unidentified comparable form
  • †Cardium sp.
  • †Cardium sp. Ainformal
  • †Cardium sp. Binformal
• †Carterwhalenia – tentative report
  • †Carterwhalenia minai – type locality for species
  • †Carterwhalenia minai
• †Carya
  • †Carya sp.
• †Cassiope
  • †Cassiope gwynae
  • †Cassiope kleinpelli
  • †Cassiope muellerriedi
  • †Cassiope renevieri – or unidentified comparable form
  • †Cassiope suturosa
• †Cataceramus – tentative report
  • †Cataceramus barabini – or unidentified comparable form
  • †Cataceramus subcircularis – or unidentified comparable form
• †Cayeuxia
  • †Cayeuxia kurdistanensis
• †Cenomanocarcinus
  • †Cenomanocarcinus sp.
  • †Cenomanocarcinus vanstraeleni
• †Cephalotaxopsis
  • †Cephalotaxopsis carolinensis
• †Ceratobulimina
  • †Ceratobulimina woodi
• †Ceratomya – tentative report
• †Ceratomya
  • †Ceratomya concentrica
  • †Ceratomya petricosa
  • †Ceratomya sp.
• †Ceratophyllum
  • †Ceratophyllum lesii – type locality for species
• †Ceratosphinctes
  • †Ceratosphinctes rachistrophus
• †Ceratotuberculus
  • †Ceratotuberculus linguituberculatusaff.
  • †Ceratotuberculus linguituberculatus
• †Cercomya
  • †Cercomya durangensis
  • †Cercomya peruviana
• †Cerithiella
  • †Cerithiella aequalirata
  • †Cerithiella kickapooense – tentative report
  • †Cerithiella nodoliratum
• †Cerithiopsis – tentative report
  • †Cerithiopsis stantoni
• †Cerithium – tentative report
• †Cerithium
  • †Cerithium bustamantii
  • †Cerithium emersoni
  • †Cerithium nodosa
  • †Cerithium puebloensis
• †Charentia
  • †Charentia cuvillieri – or unidentified comparable form
• †Charlottea
  • †Charlottea sp. Ainformal
• †Chedighaii
  • †Chedighaii hutchisoni
• †Cheirolepis – tentative report
  • †Cheirolepis sp.
• †Cheloniceras
  • †Cheloniceras buxtorfi – or unidentified comparable form
  • †Cheloniceras fossae
  • †Cheloniceras inconstans
  • †Cheloniceras sp.
  • †Cheloniceras subnodocostatumaff.
  • †Cheloniceras subnodocostatum – or unidentified comparable form
  • †Cheloniceras tschernyschewi
• †Chenopodipollis
  • †Chenopodipollis sp.
• †Chenopus
  • †Chenopus sp.
• †Cheramus
  • †Cheramus sp.
• †Chiapasella
  • †Chiapasella radiolitiformis
• †Chiloscyllium
  • †Chiloscyllium sp.
• †Chinamecaceras
  • †Chinamecaceras maldonadoi
• †Chlamys
  • †Chlamys sp.
• †Choffatella
  • †Choffatella tingitana – or unidentified comparable form
• †Chondrites
  • †Chondrites sp.
• †Chondrocoenia
  • †Chondrocoenia waltheri
• †Chondrodonta
  • †Chondrodonta munsoni
• †Choristoceras
  • †Choristoceras nobile – or unidentified comparable form
  • †Choristoceras sp.
• †Cibicides – tentative report
  • †Cibicides sp.
• †Cimolithium
  • †Cimolithium eleanorae
  • †Cimolithium miyakoense
• †Cinnabaria
  • †Cinnabaria expansa
• †Cirsochilus
  • †Cirsochilus gilberti
• †Cladocora
  • †Cladocora cracilis
  • †Cladocora gracilis
  • †Cladocora jamaicaensis
• †Cladocoropsis
  • †Cladocoropsis mirabilis
• †Cladophlebis – tentative report
• †Cladophlebis
  • †Cladophlebis browniana
  • †Cladophlebis mexicana
  • †Cladophlebis sp.
  • †Cladophlebis spp.
• †Cladophyllia
  • †Cladophyllia dichotoma
  • †Cladophyllia mexicana – type locality for species
  • †Cladophyllia miroi
  • †Cladophyllia stewartae
• †Classopolis
  • †Classopolis sp.
• †Clidastes
  • †Clidastes sp.
• †Cliona
  • †Cliona sp.
• †Coahuilacarpon – type locality for genus
  • †Coahuilacarpon phytolaccoides – type locality for species
• †Coahuilaceratops – type locality for genus
  • †Coahuilaceratops magnacuerna – type locality for species
• †Coahuilites
  • †Coahuilites cavinsi
  • †Coahuilites orynskii – type locality for species
  • †Coahuilites sheltoni
• †Coahuiloxylon – type locality for genus
  • †Coahuiloxylon terrazasiae – type locality for species
• †Coalcomana
  • †Coalcomana ramosa – or unidentified comparable form
  • †Coalcomana ramosa
  • †Coalcomana sp.
  • †Coalcomana spp.
• †Coilopoceras
  • †Coilopoceras colleti
  • †Coilopoceras requienianum
  • †Coilopoceras sp.
  • †Coilopoceras springeri
• †Collignoniceras
  • †Collignoniceras woollgari
• †Colombiceras
  • †Colombiceras sp.
  • †Colombiceras spathi
• †Colomiella
  • †Colomiella tunisiana
• †Columactinastraea
  • †Columactinastraea hilli
  • †Columactinastraea sp.
• †Columastrea
  • †Columastrea indica – type locality for species
  • †Columastrea indica
• †Columnocoenia
  • †Columnocoenia bucovinensis
  • †Columnocoenia ksiazkiewiczi
  • †Columnocoenia minima – type locality for species
• †Compsemys
  • †Compsemys sp.
  • †Compsemys victa
• †Coniopteris – or unidentified comparable form
• †Coniopteris
  • †Coniopteris arguta
  • †Coniopteris hymenophylloides
  • †Coniopteris sp.
• †Contusotruncana
  • †Contusotruncana fornicata
  • †Contusotruncana plicata
• †Coralliochama
  • †Coralliochama gboehmi
  • †Coralliochama gbohemi
  • †Coralliochama orcutti
  • †Coralliochama sp.
• †Corbicula
  • †Corbicula astartoides
• †Corbula
  • †Corbula paracrassa – or unidentified comparable form
  • †Corbula sp.
• †Cossmannea
  • †Cossmannea pauli
• †Costacopluma
  • †Costacopluma bishopi
  • †Costacopluma mexicana
• †Costatoria – tentative report
  • †Costatoria sp.
• †Craginia
  • †Craginia floresi – type locality for species
  • †Craginia floresi
• †Crassatella
  • †Crassatella sanchezi
  • †Crassatella sp.
  • †Crassatella vadosa
• †Cremnoceramus
  • †Cremnoceramus crassus
  • †Cremnoceramus deformis
  • †Cremnoceramus waltersdorfensis
• †Crenella
  • †Crenella elegantula
  • †Crenella santana
  • †Crenella serica
• †Cretacoranina
  • †Cretacoranina dichrous
• †Cretolamna
  • †Cretolamna sp.
• †Cretorectolobus
  • †Cretorectolobus sp.
• †Cricosaurus – type locality for genus
• †Cricosaurus
  • †Cricosaurus saltillense – type locality for species
  • †Cricosaurus saltillensis – type locality for species
  • †Cricosaurus vignaudi – type locality for species
• †Crioceratites
  • †Crioceratites sp.
• †Crocodileimus – or unidentified comparable form
  • †Crocodileimus sp.
• †Crucella – tentative report
• †Crucella
  • †Crucella bisulca
  • †Crucella kaisunensis
  • †Crucella magna
  • †Crucella messinae
  • †Crucella mexicana
  • †Crucella mirabunda – type locality for species
  • †Crucella mirabunda
  • †Crucella mystica
  • †Crucella sp. Ainformal
  • †Crucella sp. Binformal
  • †Crucella squama
  • †Crucella theokaftensis
• †Cryptocoenia
  • †Cryptocoenia aguilerai – type locality for species
  • †Cryptocoenia antiqua
  • †Cryptocoenia bulgarica
  • †Cryptocoenia corbariensis
  • †Cryptocoenia neocomiensis
  • †Cryptocoenia pygmaeaaff.
  • †Cryptocoenia regularis
• †Ctenophylllum
  • †Ctenophylllum braunianum
• †Ctenophyllum
  • †Ctenophyllum braunianum
• †Ctenostreon
  • †Ctenostreon sp. Ainformal
• †Cucullaeaaff.
• †Cucullaea
  • †Cucullaea gabrielis
  • †Cucullaea gratiota
  • †Cucullaea mathewsonii
  • †Cucullaea sp.
  • †Cucullaea striatiumbonata
• †Cuifastraea
  • †Cuifastraea granulata
• †Cuneolina
  • †Cuneolina parva
  • †Cuneolina walteri – or unidentified comparable form
• †Cyathophora
  • †Cyathophora atempa
  • †Cyathophora hayensis
  • †Cyathophora haysensis
  • †Cyathophora micrommatos
  • †Cyathophora miyakoensis
  • †Cyathophora sp.
• †Cyathoseris
  • †Cyathoseris catadupensis
  • †Cyathoseris formosa
• †Cycadolepis
  • †Cycadolepis mexicana
  • †Cycadolepis wettsteiniaff.
  • †Cycadolepis wettsteini
• †Cyclastrum
  • †Cyclastrum asuncionense – type locality for species
  • †Cyclastrum asuncionense
  • †Cyclastrum scammonense – type locality for species
  • †Cyclastrum scammonense
  • †Cyclastrum veracruzense – type locality for species
  • †Cyclastrum veracruzense
• †Cyclorisma
  • †Cyclorisma sp.
• †Cyclothyris – tentative report
  • †Cyclothyris subtrigonalis
• †Cylichna
  • †Cylichna secalina
• †Cylindroteuthis
  • †Cylindroteuthis cuspidata
  • †Cylindroteuthis jacuticaex gr.
• †Cymatoceras – tentative report
• †Cymatoceras
  • †Cymatoceras hilli
  • †Cymatoceras sp.
• †Cymprimera
  • †Cymprimera sp.
• †Cynepteris
  • †Cynepteris sp.
  • †Cynepteris spp.
• †Cynosphenodon – type locality for genus
  • †Cynosphenodon huizachalensis – type locality for species
• †Cypricardia
  • †Cypricardia texanumaff.
• †Cyprimeria – tentative report
• †Cyprimeria
  • †Cyprimeria alta
  • †Cyprimeria coonensis
  • †Cyprimeria sp.
  • †Cyprimeria texana
• †Cyrtocapsa
  • †Cyrtocapsa tripes
• †Cytherella
  • †Cytherella sp.
• †Cytheropteron
  • †Cytheropteron trinitiensis – tentative report
• †Dakosaurus – or unidentified comparable form
• †Dakosaurus
  • †Dakosaurus sp.
• †Dakoticancer
  • †Dakoticancer australis
• †Danubea
  • †Danubea sp. Ainformal
• †Darbyella – tentative report
  • †Darbyella sp.
• †Dardanus
  • †Dardanus mexicanus
• †Decodon
  • †Decodon tiffneyi – type locality for species
• †Deinosuchus – or unidentified comparable form
• †Deinosuchus
  • †Deinosuchus riograndensis
  • †Deinosuchus sp.
• †Dendraraea
  • †Dendraraea mammelonata
• †Dentalina
  • †Dentalina sp.
• †Dentalium
  • †Dentalium sp.
• †Dermoseris
  • †Dermoseris sp.
• †Dermosmilia
  • †Dermosmilia cretacica – or unidentified comparable form
  • †Dermosmilia cretacica
  • †Dermosmilia sp.
  • †Dermosmilia tuapensis – type locality for species
• †Dermosmiliopsis
  • †Dermosmiliopsis orbignyi
• †Desmiophyllum
  • †Desmiophyllum poleoensis
  • †Desmiophyllum sp.
• †Desmoceras
  • †Desmoceras austeniaff.
  • †Desmoceras latidorsatum
  • †Desmoceras sp.
  • †Desmoceras symmonense
• †Desmophyllites
  • †Desmophyllites diphylloides
• †Deviatus – tentative report
• †Deviatus
  • †Deviatus diamphidius
  • †Deviatus hipposidericus – or unidentified comparable form
• †Dicarinella
  • †Dicarinella sp.
• †Diceratigalea
  • †Diceratigalea gastili
  • †Diceratigalea halseyensis
• †Dicerosaturnalis
  • †Dicerosaturnalis dicranacanthos – or unidentified comparable form
  • †Dicerosaturnalis dicranacanthos
• †Dichocoenia
  • †Dichocoenia anomalos
  • †Dichocoenia sp.
• †Dichotomites
  • †Dichotomites multicostatus
• †Dicksonia
  • †Dicksonia sp.
• †Dicothodon
  • †Dicothodon bajaensis – type locality for species
• †Dictuophyllia
  • †Dictuophyllia conferticostata
• †Dictyoconites
  • †Dictyoconites reticulatum – or unidentified comparable form
• †Didymoceras
  • †Didymoceras donezianum
• †Didymotis
  • †Didymotis costatus
• †Dimorpharaea
  • †Dimorpharaea koechlini
• †Dimorphastraeopsis
  • †Dimorphastraeopsis bohemica
• †Dimorphastrea
  • †Dimorphastrea petalophyes
• †Dimorphocoenia
  • †Dimorphocoenia xipei
• †Dimorphodon
  • †Dimorphodon weintraubi – type locality for species
• †Diozoptyxis
  • †Diozoptyxis pilgrimi – or unidentified comparable form
• †Diploastrea
  • †Diploastrea harrisi
• †Diplocoenia
  • †Diplocoenia sp.
• †Diplomoceras
  • †Diplomoceras cylindraceum
• †Diplopora – or unidentified comparable form
  • †Diplopora sp.
• †Diplotremina – or unidentified comparable form
  • †Diplotremina sp.
• †Discamphiceras – tentative report
  • †Discamphiceras sp.
• †Discorbis – tentative report
  • †Discorbis sp.
• †Dissocladella
  • †Dissocladella savitriae – or unidentified comparable form
• †Distichomeandra
  • †Distichomeandra austriaca
• †Distolocerasaff.
• †Distoloceras
  • †Distoloceras capulinense – or unidentified comparable form
  • †Distoloceras parritense
  • †Distoloceras sp.
• †Douvilleiceras
  • †Douvilleiceras – type locality for speciesinformal
  • †Douvilleiceras bigoureti
  • †Douvilleiceras cornueliaff.
  • †Douvilleiceras delgoense – or unidentified comparable form
  • †Douvilleiceras martiniaff.
  • †Douvilleiceras martini
  • †Douvilleiceras pretiosum – or unidentified comparable form
  • †Douvilleiceras rex – or unidentified comparable form
  • †Douvilleiceras sp.
  • †Douvilleiceras volgense
  • †Douvilleiceras wilfridi
• †Douvillelia
  • †Douvillelia skeltoni – type locality for species
  • †Douvillelia skeltoni
  • †Douvillelia sp.
• †Drilluta
  • †Drilluta gloriae
• †Droltus
  • †Droltus eurasiaticusaff.
  • †Droltus sanignacioensis – type locality for species
  • †Droltus sanignacioensis
  • †Droltus sp. Ainformal
• †Duashnoceras
  • †Duashnoceras andinense
  • †Duashnoceras floresi – or unidentified comparable form
  • †Duashnoceras floresi
  • †Duashnoceras paucicostatum
  • †Duashnoceras sp.
  • †Duashnoceras undulatum
• †Ducatus
  • †Ducatus hipolitoensis – type locality for species
  • †Ducatus hipolitoensis
• †Dufrenoyia
  • †Dufrenoyia boesei
  • †Dufrenoyia dufrenoyi
  • †Dufrenoyia durangoensis
  • †Dufrenoyia furcataaff.
  • †Dufrenoyia huastecensis – type locality for species
  • †Dufrenoyia justinae
  • †Dufrenoyia mulatoensisaff.
  • †Dufrenoyia scotti
  • †Dufrenoyia sp.informal
  • †Dufrenoyia sp.
  • †Dufrenoyia texana
• †Durangites
  • †Durangites sp. Ainformal
  • †Durangites sp. Binformal
  • †Durangites zigzagcostatusaff.
  • †Durangites zigzagcostatus
• †Durania
  • †Durania arnaudi
  • †Durania curasavica
  • †Durania huasteca – type locality for species
  • †Durania nicholasi
  • †Durania ojanchalensis
• †Echinobathra
  • †Echinobathra durhami
• †Ectocentrites
  • †Ectocentrites hillebrandti – type locality for species
• †Elasmocoenia
  • †Elasmocoenia guerangeri – or unidentified comparable form
• †Elatocladus
  • †Elatocladus carolinensisex gr.
  • †Elatocladus carolinensis
  • †Elatocladus sp.
  • †Elatocladus spp.
• †Ellimmichthys
  • †Ellimmichthys sp.
• †Elliptio
  • †Elliptio sp.informal
• †Enallaster
  • †Enallaster texanus – tentative report
  • †Enallaster texanus
• †Enallhelia
  • †Enallhelia anomalos
  • †Enallhelia somaensis
• †Enchodus
  • †Enchodus sp.
  • †Enchodus zipapanensis – type locality for species
• †Endostoma
  • †Endostoma mexicana – type locality for species
• †Engonoceras
  • †Engonoceras sp.
• †Enoploclytia
  • †Enoploclytia sp.
  • †Enoploclytia tumimanus
• †Entolium
  • †Entolium corneolum
  • †Entolium disciforme
• †Eocallista – tentative report
• †Eocallista
  • †Eocallista brongniarti
  • †Eocallista pulchella
  • †Eocallista sp.
• †Eocalyptraphorus
  • †Eocalyptraphorus binodiferus
• †Eocomoseris
  • †Eocomoseris ramosa
• †Eodouvilleiceras
  • †Eodouvilleiceras adkinsi
• †Eoheteroceras
  • †Eoheteroceras sp.
• †Eohydnophora
  • †Eohydnophora ovalis
  • †Eohydnophora picteti
• †Eopaquiericeras
  • †Eopaquiericeras pazi
  • †Eopaquiericeras peraltai
• †Eopecten
  • †Eopecten velatus
• †Eoradiolites
  • †Eoradiolites davidsoniaff.
  • †Eoradiolites davidsoni
  • †Eoradiolites sp.
• †Eoscaphites
  • †Eoscaphites tenuicostatus – or unidentified comparable form
• †Eospongosaturninus
  • †Eospongosaturninus protoformis
• †Ephedra
  • †Ephedra sp.
• †Epiaster
  • †Epiaster sp.
• †Epigondelella – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Epigondelella sp. – type locality for species
• †Epistomina – tentative report
  • †Epistomina cretosa
• †Epistreptophyllum
  • †Epistreptophyllum sp.
• †Epitonium
  • †Epitonium faearium – or unidentified comparable form
• †Eptingium
  • †Eptingium sp. Ainformal
  • †Eptingium sp. Binformal
• †Equisetites
  • †Equisetites sp.
• †Equisetum
  • †Equisetum rajmahalense
  • †Equisetum rajmahalensis
• †Eriphylopsis
  • †Eriphylopsis sp.
• †Etea
  • †Etea sp.
• †Ethmocardium
  • †Ethmocardium sp.
  • †Ethmocardium welleri
• †Euclastes
  • †Euclastes coahuilaensis – type locality for species
  • †Euclastes coahuilaensis
• †Eucycloscala
  • †Eucycloscala emersoni
  • †Eucycloscala subbisertus
• †Eucymatoceras
  • †Eucymatoceras sp.
• †Eugyra
  • †Eugyra affinis
  • †Eugyra lanckoronensis
  • †Eugyra neocomiensis
  • †Eugyra pontica
• †Eunerinea
  • †Eunerinea aptiensis – or unidentified comparable form
  • †Eunerinea hicoriensis
  • †Eunerinea titania
• †Euspira
  • †Euspira rectilabrum
• †Euthriofusus
  • †Euthriofusus wenzi
• †Eutrephoceras
  • †Eutrephoceras irritilasi – type locality for species
  • †Eutrephoceras irritilasi
  • †Eutrephoceras sp.
• †Everticyclammina
  • †Everticyclammina virguliana
• †Exiteloceras
  • †Exiteloceras jenneyi
• †Exnelumbites – type locality for genus
  • †Exnelumbites callejasiae – type locality for species
• †Exogyraaff.
• †Exogyra
  • †Exogyra acroumbonata
  • †Exogyra acuticosta
  • †Exogyra cartledgei
  • †Exogyra columbella
  • †Exogyra costata
  • †Exogyra haarmanni
  • †Exogyra latissima
  • †Exogyra latissimum
  • †Exogyra olisiponensis – or unidentified comparable form
  • †Exogyra ponderosa
  • †Exogyra putnami
  • †Exogyra quitmanensis – or unidentified comparable form
  • †Exogyra reedi
  • †Exogyra robusta
  • †Exogyra sp.
  • †Exogyra sp. Binformal
  • †Exogyra sp. Cinformal
  • †Exogyra tamaulipana
  • †Exogyra tlahualiloensis
  • †Exogyra tuberculifera
  • †Exogyra yabei
• †Fagesia
  • †Fagesia catinusaff.
  • †Fagesia catinus
  • †Fagesia pervinquieri – tentative report
  • †Fagesia sp.
• †Falcimytilus
  • †Falcimytilus sp.
• †Fanthalamia
  • †Fanthalamia glomerata – type locality for species
  • †Fanthalamia polystoma
  • †Fanthalamia sp.
• †Faraudiella
  • †Faraudiella franciscoensis
• †Farcus – tentative report
• †Farcus
  • †Farcus asperoensis
  • †Farcus sp.
• †Favia – tentative report
  • †Favia gregoryi
• †Favrella
  • †Favrella sp.
• †Favusella
  • †Favusella washitensis
• †Felixigyra
  • †Felixigyra patruliusi
  • †Felixigyra sp.
• †Ficheuria
  • †Ficheuria pernoniaff.
• †Filkornia
  • †Filkornia parasolitaria
• †Fimbria
  • †Fimbria peninsularis
  • †Fimbria sp.
• †Flemingostrea
  • †Flemingostrea subspatula
  • †Flemingostrea subspatulata
• †Forresteria
  • †Forresteria alluaudi
  • †Forresteria brancoi
• †Freixialina
  • †Freixialina planispiralis
• †Frenguelliella
  • †Frenguelliella inexspectata – or unidentified comparable form
  • †Frenguelliella poultoni
• †Frenolepsis – or unidentified comparable form
  • †Frenolepsis sp.
• †Fungiastraea
  • †Fungiastraea crespoi
• †Gallolestes – type locality for genus
  • †Gallolestes pachymandibularis – type locality for species
• †Gansserina
  • †Gansserina gansseri
• †Gargasiceras
  • †Gargasiceras acutecostum
• †Gastrochaena
  • †Gastrochaena sp.
• †Gaudryceras
  • †Gaudryceras kayei
  • †Gaudryceras mite
• †Gerhardtia
  • †Gerhardtia sp.
• †Gervillaria
  • †Gervillaria alaeformis
  • †Gervillaria sp.
• †Gervillella
  • †Gervillella araucana
  • †Gervillella leesi
• †Gervillia
  • †Gervillia alatior
  • †Gervillia sp. Ainformal
• †Ginglymostoma
  • †Ginglymostoma sp.
• †Glabrocingulum
  • †Glabrocingulum sp.
• †Gleviceras
  • †Gleviceras palomenseaff.
• †Globotruncana
  • †Globotruncana falsostuarti
  • †Globotruncana linneiana
  • †Globotruncana rioensis
  • †Globotruncana rosseta
  • †Globotruncana sp.
  • †Globotruncana ventricosa
• †Globulina
  • †Globulina exserta
• †Glochiceras
  • †Glochiceras sp.
• †Glossopteris
  • †Glossopteris sp.
• †Glycymeris
  • †Glycymeris sp.
  • †Glycymeris veatchii
• †Glyphiteuthis
  • †Glyphiteuthis rhinophora – type locality for species
• †Gonatosorus
  • †Gonatosorus nathorstii
• †Goniocora
  • †Goniocora sp.
• †Goniomya
  • †Goniomya sp.
  • †Goniomya sp. Ainformal
• †Goniopora
  • †Goniopora sp.
• †Goodhallites
  • †Goodhallites aguilerae
• †Gorgansium
  • †Gorgansium gongyloideum
  • †Gorgansium sp.
  • †Gorgansium sp. Ainformal
• †Grallator
  • †Grallator sp.
• †Grammatodon
  • †Grammatodon rayaensis – type locality for species
  • †Grammatodon sp.
  • †Grammatodon sulcatus
  • †Grammatodon vancouverensis
• †Granocardium
  • †Granocardium tippanum
• †Granosolarium
  • †Granosolarium coffea
• †Graptocarcinus
  • †Graptocarcinus muiri
• †Graysonites – tentative report
• †Graysonites
  • †Graysonites adkinsi
  • †Graysonites reynoldsi – type locality for species
  • †Graysonites sp.
  • †Graysonites wacoense
• †Gresslya – tentative report
• †Gresslya
  • †Gresslya sp.
  • †Gresslya striata – or unidentified comparable form
• †Griphoporella
  • †Griphoporella sp.
• †Groeberella
  • †Groeberella sp. Ainformal
• †Gryphaea
  • †Gryphaea mucronata
  • †Gryphaea sp.
  • †Gryphaea wardi
  • †Gryphaea washitaensis
• †Guidonia
  • †Guidonia intermedia – or unidentified comparable form
  • †Guidonia parvula – or unidentified comparable form
• †Guttulina
  • †Guttulina exepolita
• †Guzzyella
  • †Guzzyella acuminata
  • †Guzzyella bisulcata
  • †Guzzyella sp. 1informal
  • †Guzzyella sp. 2informal
• †Gymnentome
  • †Gymnentome sp.
  • †Gymnentome zebra
• †Gyrodes
  • †Gyrodes major
  • †Gyrodes supraplicatus
• †Gyrostrea
  • †Gyrostrea sp.
• †Haeckelicyrtium
  • †Haeckelicyrtium sp. Binformal
• †Hagiastrum
  • †Hagiastrum augustum
  • †Hagiastrum majusculum
  • †Hagiastrum rudimentum
• †Haldonia – tentative report
• †Haldonia
  • †Haldonia cyclops
• †Halimeda
  • †Halimeda sp.
• †Halobia
  • †Halobia lineata
• †Hamites
  • †Hamites attenuatusaff.
  • †Hamites attenuatus
  • †Hamites carrancoi
  • †Hamites charpentieriaff.
  • †Hamites intermediusaff.
  • †Hamites simplex
  • †Hamites sp.
  • †Hamites tropicalis – or unidentified comparable form
  • †Hamites venetzianus – or unidentified comparable form
  • †Hamites virgulatus – or unidentified comparable form
• †Hamulina
  • †Hamulina sp.
• †Hamulinites
  • †Hamulinites sp.
• †Haploceras
  • †Haploceras sp.
  • †Haploceras transatlanticum
• †Haplocytheridea – tentative report
  • †Haplocytheridea sp.
• †Harpactocarcinus
  • †Harpactocarcinus americanus
• †Harpagodes
  • †Harpagodes americanus
  • †Harpagodes desori – or unidentified comparable form
  • †Harpagodes mexicanus
  • †Harpagodes oceani
• †Hedbergella
  • †Hedbergella delrioensis
  • †Hedbergella monmouthensis
• †Heliocoenia
  • †Heliocoenia rarauensis
  • †Heliocoenia rozkowskae
  • †Heliocoenia variabilis
• †Hemiaster – tentative report
• †Hemiaster
  • †Hemiaster bexari
  • †Hemiaster calvani – tentative report
  • †Hemiaster calvani
  • †Hemiaster calvini
  • †Hemiaster sp.
  • †Hemiaster whitei
• †Hemihoplites – tentative report
  • †Hemihoplites mexicanus
• †Heminautilus
  • †Heminautilus lallierianusaff.
• †Heteraster
  • †Heteraster mexicanus
  • †Heteraster sp.
• †Heterastridium
  • †Heterastridium conglobatum
  • †Heterastridium sp.
• †Heterocoenia – tentative report
• †Heterocoenia
  • †Heterocoenia exigua
  • †Heterocoenia pusilla
• †Heterodontosaurus – or unidentified comparable form
  • †Heterodontosaurus sp.
• †Heterohelix
  • †Heterohelix globulosa
  • †Heterohelix sp.
• †Hexasaturnalis
  • †Hexasaturnalis hexagonus – or unidentified comparable form
• †Higumastra
  • †Higumastra inflata – or unidentified comparable form
• †Hippurites
  • †Hippurites ceibarum
  • †Hippurites muellerriedi
  • †Hippurites perkinsi – tentative report
  • †Hippurites resectus
• †Hoeglundina
  • †Hoeglundina carpenteri
• †Holaster – tentative report
• †Holaster
  • †Holaster nanus
  • †Holaster sp.
• †Holcostephanus
  • †Holcostephanus sp.
• †Holectypus
  • †Holectypus planatus
  • †Holectypus sp.
  • †Holectypus sp. Ainformal
  • †Holectypus sp. Binformal
  • †Holectypus sp. Dinformal
• †Holocystis
  • †Holocystis elegans
• †Holospira
  • †Holospira sp.
• †Homoeoparonaella
  • †Homoeoparonaella elegans
  • †Homoeoparonaella lowryensis – type locality for species
  • †Homoeoparonaella lowryensis
• †Homomya
  • †Homomya casei
  • †Homomya sp.
• †Hoplites
  • †Hoplites sp.
• †Hoplitoides
  • †Hoplitoides gibbosulus – or unidentified comparable form
  • †Hoplitoides ingens
  • †Hoplitoides mirabilisaff.
  • †Hoplitoides sp.
• †Hoplochelys – or unidentified comparable form
  • †Hoplochelys sp.
• †Hsuum
  • †Hsuum arenaense – type locality for species
  • †Hsuum arenaense
  • †Hsuum mclaughlini
  • †Hsuum sp.
  • †Hsuum tamanense
• †Huasteconodon – type locality for genus
  • †Huasteconodon wiblei – type locality for species
• †Huehuecanauhtlus – type locality for genus
• †Huehuecanauhtlus
  • †Huehuecanauhtlus tiquichensis – type locality for species
  • †Huehuecanauhtlus tiquichensis
• †Huehuecuetzpalli – type locality for genus
  • †Huehuecuetzpalli mixtecus – type locality for species
• †Huetamia
  • †Huetamia buitronae – type locality for species
  • †Huetamia buitronae
  • †Huetamia sp.
• †Hybodus
  • †Hybodus sp.
• †Hypacanthoplites
  • †Hypacanthoplites burckhardti
  • †Hypacanthoplites ceratitosus
  • †Hypacanthoplites clavatusaff.
  • †Hypacanthoplites leanzae – or unidentified comparable form
  • †Hypacanthoplites plesiotypicus
  • †Hypacanthoplites rugosusaff.
  • †Hypacanthoplites sarasiniaff.
  • †Hypacanthoplites sp.
• †Ichthyornis
  • †Ichthyornis dispar
• †Ichthyosaurus
  • †Ichthyosaurus sp.
• †Icriocarcinus
  • †Icriocarcinus xestos
• †Idoceras
  • †Idoceras inflatum
  • †Idoceras pinonense – type locality for species
  • †Idoceras pinonense
  • †Idoceras sp.
• †Immunitoceras
  • †Immunitoceras immunitumaff.
  • †Immunitoceras immunitum
  • †Immunitoceras pruvosti – type locality for species
  • †Immunitoceras sp.
• †Indotrigonia
  • †Indotrigonia sp.
• †Inoceramus
  • †Inoceramus anglicus – or unidentified comparable form
  • †Inoceramus ezoensis – or unidentified comparable form
  • †Inoceramus goldfussianus
  • †Inoceramus pacificus
  • †Inoceramus pictus
  • †Inoceramus shikotanensis – or unidentified comparable form
  • †Inoceramus sp.
  • †Inoceramus vanuxemi
• †Inoperna
  • †Inoperna perplicata – or unidentified comparable form
• †Integricardium – tentative report
  • †Integricardium sp.
• †Isastrea
  • †Isastrea neocomiensis – or unidentified comparable form
  • †Isastrea whitneyi
• †Ischyrhiza
  • †Ischyrhiza sp.
• †Isocyprina
  • †Isocyprina ancatruzi
• †Isognomon
  • †Isognomon lamberti
• †Ixtahua – type locality for genus
  • †Ixtahua benjamini – type locality for species
• †Jalpania
  • †Jalpania queretana
• †Jponsia
  • †Jponsia geslini
• †Kamerunoceras
  • †Kamerunoceras isovokyense
• †Karakaschiceras
  • †Karakaschiceras biassalense – or unidentified comparable form
  • †Karakaschiceras sp.
• †Karsteniceras
  • †Karsteniceras sp.
• †Katroma
  • †Katroma angusta
  • †Katroma aurita – type locality for species
  • †Katroma aurita
  • †Katroma clara
  • †Katroma sp. Ainformal
• †Kazanskyella
  • †Kazanskyella arizonica – or unidentified comparable form
• †Keilostoma
  • †Keilostoma quaidei
• †Keriophyllia
  • †Keriophyllia roniewiczae – type locality for species
• †Kilianella
  • †Kilianella lucensis – or unidentified comparable form
• †Kimbleia
  • †Kimbleia albrittoni
  • †Kimbleia sp.
• †Kingena
  • †Kingena wacoensis
• †Kobyastraea – tentative report
  • †Kobyastraea holmoides
• †Kossmatella
  • †Kossmatella agassizi
• †Kossmatia
  • †Kossmatia bifurcata – or unidentified comparable form
  • †Kossmatia purisima
• †Kouphichnium
  • †Kouphichnium sp.
• †Kritosaurus – or unidentified comparable form
  • †Kritosaurus sp.
• †Ksiazkiewiczia
  • †Ksiazkiewiczia poblana – type locality for species
• †Kurnubia
  • †Kurnubia palastiniensisex gr.
• †Labocania – type locality for genus
  • †Labocania anomala – type locality for species
• †Labyrinthina
  • †Labyrinthina mirabilis
• †Laccopteris
  • †Laccopteris sp.
• †Laluzia – type locality for genus
  • †Laluzia armini – type locality for species
• †Lamellofungia
  • †Lamellofungia tenochi
• †Lantus
  • †Lantus sp. Ainformal
• †Lanubus
  • †Lanubus sp.
• †Latiastrea
  • †Latiastrea kaufmanni
  • †Latiastrea mucronata
  • †Latiastrea variabilis
• †Latiphyllia
  • †Latiphyllia mexicana – type locality for species
  • †Latiphyllia mexicana
• †Latirhinus – type locality for genus
  • †Latirhinus uitstlani – type locality for species
• †Latusastrea
  • †Latusastrea alveolaris
  • †Latusastrea irregularis
  • †Latusastrea provincialis
• †Laurozamites
  • †Laurozamites fragilisex gr.
  • †Laurozamites fragilis – type locality for species
  • †Laurozamites pima – type locality for species
  • †Laurozamites tarahumara – type locality for species
  • †Laurozamites yaqui – type locality for species
• †Lechites
  • †Lechites gaudini – or unidentified comparable form
• †Legumen
  • †Legumen ooides
• †Lenticulina
  • †Lenticulina sp.
  • †Lenticulina subalta – or unidentified comparable form
• †Leopoldiaaff.
• †Leopoldia – or unidentified comparable form
• †Leopoldia
  • †Leopoldia bakeri
  • †Leopoldia crassicostata
  • †Leopoldia truncata
• †Lepidorbitoides
  • †Lepidorbitoides minima
• †Lepidotes
  • †Lepidotes sp.
• †Lepisosteus
  • †Lepisosteus sp.
• †Leptarbacia
  • †Leptarbacia argutus
• †Leptomaria
  • †Leptomaria austinensis
• †Leptosphinctes
  • †Leptosphinctes sp.
  • †Leptosphinctes tabernai
• †Lima
  • †Lima coahuilensis
  • †Lima elpasensis – or unidentified comparable form
  • †Lima nodulosa
  • †Lima sp.
  • †Lima wacoensis
• †Limopsis
  • †Limopsis sp.
• †Linearis
  • †Linearis sp.
• †Liocarenus
  • †Liocarenus formosum
• †Liopeplum
  • †Liopeplum cretaceum – or unidentified comparable form
• †Lispodesthes
  • †Lispodesthes lilipus – type locality for species
• †Lithophaga
  • †Lithophaga sp.
• †Loboseris
  • †Loboseris mexicana – type locality for species
  • †Loboseris mexicana
• †Loffa
  • †Loffa mulleri – type locality for species
  • †Loffa mulleri
• †Longusorbis
  • †Longusorbis quadratus
• †Loopus – tentative report
• †Loopus
  • †Loopus campbelli – or unidentified comparable form
  • †Loopus campbelli
  • †Loopus mexicana
  • †Loopus primitivus – or unidentified comparable form
  • †Loopus primitivus
  • †Loopus probus
  • †Loopus sp.
• †Lopha – tentative report
  • †Lopha cordillerana – type locality for species
• †Lophoranina
  • †Lophoranina cristaspina
• †Loxo
  • †Loxo decore
• †Loxoconcha – tentative report
  • †Loxoconcha sp.
• †Lucina
  • †Lucina kellumi
  • †Lucina radiata – or unidentified comparable form
  • †Lucina sp.
• †Lunatia – tentative report
• †Lunatia
  • †Lunatia praegrandis
  • †Lunatia sp.
• †Lyelliceras
  • †Lyelliceras lyelli – or unidentified comparable form
• †Lyriochlamys
  • †Lyriochlamys traskii
• †Lytoceras
  • †Lytoceras sp.
• †Macgeopsis
  • †Macgeopsis sonorensis – type locality for species
• †Macgillavryia
  • †Macgillavryia nicholasi
• †Macraster
  • †Macraster sp.
• †Macropterygium
  • †Macropterygium sp.
• †Macroscaphites
  • †Macroscaphites sp.
• †Macrosemicotzus
  • †Macrosemicotzus americanus
• †Macrosemiocotzus – type locality for genus
  • †Macrosemiocotzus americanus – type locality for species
• †Macrotaeniopteris
  • †Macrotaeniopteris sp.
• †Maderia
  • †Maderia casitensis
  • †Maderia coahuilensis
  • †Maderia marcoensis
• †Maeandrostylis
  • †Maeandrostylis antimoniensis – type locality for species
  • †Maeandrostylis antimoniensis
• †Magnapaulia
  • †Magnapaulia laticaudus
• †Mammillopora
  • †Mammillopora encrusta
• †Mammites
  • †Mammites mohavanensis
  • †Mammites mohovanensis
  • †Mammites nodosoides
• †Mantelliceras
  • †Mantelliceras charlestoni – type locality for species
  • †Mantelliceras mantelli
  • †Mantelliceras martimpreyi – or unidentified comparable form
  • †Mantelliceras portalesi – type locality for species
  • †Mantelliceras saxbii
• †Marginotruncana
  • †Marginotruncana sp.
• †Mariella
  • †Mariella bosquensis
  • †Mariella brazoensis
  • †Mariella camachoensis
• †Marinella
  • †Marinella lugeoni
• †Mathoceras
  • †Mathoceras celestinae – type locality for species
  • †Mathoceras neoleonensis – type locality for species
  • †Mathoceras sp.
  • †Mathoceras venezolanum – or unidentified comparable form
• †Mauriciosaurus – type locality for genus
  • †Mauriciosaurus fernandezi – type locality for species
• †Mazatepites
  • †Mazatepites arredondense
• †Meandraraea
  • †Meandraraea tulae
• †Meandrastrea
  • †Meandrastrea wollheimi
• †Meandrophyllia
  • †Meandrophyllia lotharinga – or unidentified comparable form
  • †Meandrophyllia lotharinga
  • †Meandrophyllia meandriformis
  • †Meandrophyllia meandroides
  • †Meandrophyllia montezumae
  • †Meandrophyllia oceani
  • †Meandrophyllia steini
• †Meandrospira
  • †Meandrospira sp.
• †Mecochirus
  • †Mecochirus sp.
• †Meekia
  • †Meekia sp.
• †Megalops
  • †Megalops sp.
• †Megatyloceras
  • †Megatyloceras sp.
• †Megaxantho
  • †Megaxantho zoque
• †Melvius – or unidentified comparable form
• †Melvius
  • †Melvius sp.
• †Menabites
  • †Menabites vanuxemi
• †Menuites
  • †Menuites sp.
• †Mertensides
  • †Mertensides bullatus
  • †Mertensides sp.
  • †Mertensides spp.
• †Mesalia
  • †Mesalia mauryae
• †Mesodma
  • †Mesodma formosa – or unidentified comparable form
• †Mesoendothyra
  • †Mesoendothyra croatica
• †Mesoglauconia
  • †Mesoglauconia burnsi
  • †Mesoglauconia sp.
• †Mesolanistes
  • †Mesolanistes reesidei
• †Mesomiltha
  • †Mesomiltha portlandica
• †Mesomorpha
  • †Mesomorpha ornata
• †Mesorbitolina
  • †Mesorbitolina sp.
  • †Mesorbitolina texana
• †Metacerithium
  • †Metacerithium sp.
• †Metengonoceras
  • †Metengonoceras bravoense
• †Metoicoceras
  • †Metoicoceras bosei
  • †Metoicoceras geslinianum – or unidentified comparable form
  • †Metoicoceras sp.
• †Metriorhynchus – or unidentified comparable form
  • †Metriorhynchus sp.
• †Mexicanoceras
  • †Mexicanoceras laticostatum
  • †Mexicanoceras multicostatum
• †Mexicaprina
  • †Mexicaprina alata
  • †Mexicaprina cornuta
  • †Mexicaprina minuta
  • †Mexicaprina quadrata
• †Mexiglossa
  • †Mexiglossa sp.
  • †Mexiglossa varia
• †Mexopus – type locality for genus
• †Mexopus
  • †Mexopus mexicanus – type locality for species
  • †Mexopus robustus – type locality for species
• †Meyeria
  • †Meyeria mexicana
  • †Meyeria pueblaensis – type locality for species
  • †Meyeria pueblaensis
• †Michin – type locality for genus
  • †Michin csernai – type locality for species
• †Microphyllia
  • †Microphyllia densecostata
• †Microschiza
  • †Microschiza scalaris
• †Microsolena – tentative report
• †Microsolena
  • †Microsolena guttata
  • †Microsolena kobyi
  • †Microsolena sp.
• †Mirifusus
  • †Mirifusus sp.
• †Mitrocaprina
  • †Mitrocaprina sp.
  • †Mitrocaprina tschoppi
• †Mixastraea
  • †Mixastraea westfalica
• †Modiolus
  • †Modiolus baylei – or unidentified comparable form
  • †Modiolus giganteus
  • †Modiolus hallanus
• †Momipites
  • †Momipites microcoryphaeus
  • †Momipites tenuipolusaff.
  • †Momipites triletipollenites
  • †Momipites triradiatus
• †Monoclonius
  • †Monoclonius sp.
• †Monopleura
  • †Monopleura ayalai
  • †Monopleura bicornuta
  • †Monopleura marcida
  • †Monopleura pinguiscula
  • †Monopleura sp.
• †Monotis
  • †Monotis subcircularis – or unidentified comparable form
• †Montastrea – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Montastrea sp.
• †Montlivaltia
  • †Montlivaltia coahuilensis – type locality for species
  • †Montlivaltia rugulosa – or unidentified comparable form
  • †Montlivaltia sp.
• †Morea
  • †Morea reticulata
• †Morphastrea
  • †Morphastrea barcenai
• †Morrowites
  • †Morrowites depressus – type locality for species
  • †Morrowites sp.
• †Mortoniceras
  • †Mortoniceras inflatum – or unidentified comparable form
• †Muellerriedia
  • †Muellerriedia boesei
  • †Muellerriedia sp.
• †Multicolumnastraea
  • †Multicolumnastraea cyathiformis
  • †Multicolumnastraea sp.
• †Multiptyxis
  • †Multiptyxis prefleuriaui
• †Murphitys
  • †Murphitys madonna
• †Muzquizopteryx – type locality for genus
• †Muzquizopteryx – or unidentified comparable form
  • †Muzquizopteryx coahuilensis – type locality for species
  • †Muzquizopteryx sp.
• †Muzquizoxylon – type locality for genus
  • †Muzquizoxylon porrasii – type locality for species
• †Mycetaraea
  • †Mycetaraea dimorphaaff.
• †Myledaphus
  • †Myledaphus bipartitus
• †Myoconcha
  • †Myoconcha neuquena
  • †Myoconcha valenciennesi – or unidentified comparable form
• †Myophorella
  • †Myophorella sp.
• †Myophorigonia
  • †Myophorigonia jaworskii
  • †Myophorigonia salasi
• †Myophoriopis
  • †Myophoriopis sonorensis
• †Myriophyllia
  • †Myriophyllia cuyleri – or unidentified comparable form
  • †Myriophyllia propria
• †Mysidioptera
  • †Mysidioptera mexicana
• †Mytiloides
  • †Mytiloides herbichi
  • †Mytiloides hercynicus
  • †Mytiloides incertus
  • †Mytiloides labiatus
  • †Mytiloides scupini
• †Mytiloperna – tentative report
  • †Mytiloperna sp. Ainformal
• †Nanogyra
  • †Nanogyra virgula
• †Naomichelys
  • †Naomichelys sp.
• †Napora
  • †Napora boneti
  • †Napora bukryiaff.
  • †Napora bukryi
  • †Napora cerromesaensis
  • †Napora cornis
  • †Napora crudaaff.
  • †Napora cruda
  • †Napora heimi
  • †Napora imperfossa
  • †Napora insolita – or unidentified comparable form
  • †Napora reiferensis
  • †Napora vegaensis
• †Naropa
  • †Naropa vi – type locality for species
  • †Naropa vi
• †Natica – tentative report
• †Natica – or unidentified comparable form
• †Natica
  • †Natica conradi
  • †Natica hemispherica – or unidentified comparable form
  • †Natica hugardiana
  • †Natica importuna
  • †Natica neptuni
  • †Natica sp.
  • †Natica sueurii – or unidentified comparable form
• †Natraglia
  • †Natraglia luminosa – type locality for species
  • †Natraglia unica – type locality for species
• †Nautiloculina
  • †Nautiloculina bronnimanni
  • †Nautiloculina oolithica
• †Neithea – or unidentified comparable form
• †Neithea
  • †Neithea atava
  • †Neithea biangulata
  • †Neithea occidentalisaff.
  • †Neithea sp.
  • †Neithea wrightiaff.
  • †Neithea youngi – or unidentified comparable form
• †Nemodon
  • †Nemodon eufalensis
  • †Nemodon sp.
• †Neocomites
  • †Neocomites neocomiensis – or unidentified comparable form
  • †Neocomites neocomiensis
  • †Neocomites sp.
• †Neocrassina – tentative report
• †Neocrassina
  • †Neocrassina gueuxi
  • †Neocrassina sp.
• †Neocrioceras – tentative report
  • †Neocrioceras sp.
• †Neohoploceras
  • †Neohoploceras bartolinii – or unidentified comparable form
• †Neoparonaella
  • †Neoparonaella delicata – or unidentified comparable form
  • †Neoparonaella delicata
  • †Neoparonaella sp.
• †Neophlycticeras
  • †Neophlycticeras francisocensis – type locality for species
  • †Neophlycticeras texanum
• †Neophylloceras
  • †Neophylloceras arturoi – type locality for species
• †Neoptychites
  • †Neoptychites cephalotus
  • †Neoptychites sp.
• †Neospathodus
  • †Neospathodus homeri
  • †Neospathodus triangularis
• †Neovallupus
  • †Neovallupus dumitricai – or unidentified comparable form
  • †Neovallupus dumitricai
  • †Neovallupus modestusaff.
  • †Neovallupus modestus
  • †Neovallupus sp. Ainformal
  • †Neovallupus sp. Binformal
  • †Neovallupus sp. Cinformal
• †Neridomus
  • †Neridomus delpeyae
• †Nerinea
  • †Nerinea azteca – type locality for species
  • †Nerinea bosei
  • †Nerinea euphyes
  • †Nerinea gachupinae – type locality for species
  • †Nerinea galatea
  • †Nerinea pseudoconvexa – or unidentified comparable form
  • †Nerinea sp.
  • †Nerinea tomasensis
• †Nerita
  • †Nerita divaricata – or unidentified comparable form
  • †Nerita sp.
• †Neritoma
  • †Neritoma woodfordi
• †Neurankylus
  • †Neurankylus sp.
• †Nevadathalamia
  • †Nevadathalamia cylindrica
• †Nezzazata
  • †Nezzazata isabellae – or unidentified comparable form
• †Nicklesia
  • †Nicklesia sp.
• †Nilsonia
  • †Nilsonia macrophylla
  • †Nilsonia morrisiana – tentative report
• †Nododelphinula
  • †Nododelphinula diminuta
  • †Nododelphinula galeotti
• †Nodosaria – or unidentified comparable form
• †Nodosaria
  • †Nodosaria orthopleura
  • †Nodosaria sceptrum
  • †Nodosaria sp.
• †Noeggerathiopsis – tentative report
• †Noeggerathiopsis
  • †Noeggerathiopsis hislopii
  • †Noeggerathiopsis sp.
• †Normapolles
  • †Normapolles sp.
• †Nostoceras
  • †Nostoceras hyatti
• †Notelops
  • †Notelops sp.
• †Nucula
  • †Nucula ciboloensis
• †Nuculana
  • †Nuculana corsicana
  • †Nuculana sp.
• †Nudopollis
  • †Nudopollis sp.
• †Nychtosaurus – or unidentified comparable form
  • †Nychtosaurus sp.
• †Ochetoceras
  • †Ochetoceras neohispanicum – or unidentified comparable form
• †Odontaspis
  • †Odontaspis sp.
• †Offneria
  • †Offneria sp.
• †Olcostephanus
  • †Olcostephanus astierianusaff.
  • †Olcostephanus astierianus – or unidentified comparable form
  • †Olcostephanus bakeri
  • †Olcostephanus balestrai
  • †Olcostephanus colorinensis
  • †Olcostephanus filifer
  • †Olcostephanus paucicostatus
  • †Olcostephanus prorsiradiatus
  • †Olcostephanus psilostomaaff.
  • †Olcostephanus sanlazarensis
  • †Olcostephanus sp.
• †Oligoptycha – tentative report
  • †Oligoptycha popenoei
• †Olmosoxylon – type locality for genus
  • †Olmosoxylon upchurchii – type locality for species
• †Omalaxis
  • †Omalaxis planorbis – tentative report
• †Omphaloptychia
  • †Omphaloptychia sp.
• †Onychocella
  • †Onychocella schopforum
• †Oosterella – tentative report
• †Oosterella
  • †Oosterella begastrensis
  • †Oosterella cultrata
  • †Oosterella cultrataeformis
  • †Oosterella gaudryi
  • †Oosterella sp.
• †Opalia
  • †Opalia riachuelanum
  • †Opalia sp.informal
• †Opertochasma
  • †Opertochasma sp.
• †Ophiactis
  • †Ophiactis applegatei
• †Ophiomusiumaff.
  • †Ophiomusium sp.
• †Ophthalmapseudes
  • †Ophthalmapseudes sp.
• †Ophthalmoplax
  • †Ophthalmoplax difuntaensis
• †Ophthalmosaurus
  • †Ophthalmosaurus icenicus – or unidentified comparable form
  • †Ophthalmosaurus icenicus
• †Opis
  • †Opis rosarioensis
  • †Opis triangulata
• †Oppelia
  • †Oppelia sp.
• †Orbiculiforma
  • †Orbiculiforma cedrosensis
  • †Orbiculiforma sp.
• †Orbiculiformella
  • †Orbiculiformella callosa
  • †Orbiculiformella sp. Ainformal
  • †Orbiculiformella sp. Binformal
  • †Orbiculiformella sp. Cinformal
• †Orbignygyra – tentative report
  • †Orbignygyra mariscali
• †Orbitolina
  • †Orbitolina sp.
  • †Orbitolina texana
• †Orthaspidoceras
  • †Orthaspidoceras sp.
• †Oscillopha
  • †Oscillopha arzipensis
  • †Oscillopha semiarmata
  • †Oscillopha sp.
• †Osmunda
  • †Osmunda sp.
• †Osteomya
  • †Osteomya dilata
• †Ostrea
  • †Ostrea alicula
  • †Ostrea falcata
  • †Ostrea riograndensis
  • †Ostrea sloani – or unidentified comparable form
  • †Ostrea sp.
  • †Ostrea subovata
• †Otostoma
  • †Otostoma japonica
• †Otozamites
  • †Otozamites cardiopterioides
  • †Otozamites cardiopteroides
  • †Otozamites graphicus
  • †Otozamites hennoquei – or unidentified comparable form
  • †Otozamites hespera
  • †Otozamites pterophylloides – or unidentified comparable form
  • †Otozamites sp.
• †Ovalastrea
  • †Ovalastrea sp.
• †Oxybeloceras
  • †Oxybeloceras crassum
• †Oxytoma
  • †Oxytoma inequivalvis – or unidentified comparable form
• †Oxytropidoceras
  • †Oxytropidoceras acutocarinatumaff.
  • †Oxytropidoceras bravoensis
  • †Oxytropidoceras bravoenssi
  • †Oxytropidoceras chihuahuaense – or unidentified comparable form
  • †Oxytropidoceras decsernae
  • †Oxytropidoceras diazi – or unidentified comparable form
  • †Oxytropidoceras diazi
  • †Oxytropidoceras elaboratum
  • †Oxytropidoceras imlayi
  • †Oxytropidoceras multifidumaff.
  • †Oxytropidoceras roissyi – or unidentified comparable form
  • †Oxytropidoceras roissyi
• †Pachydiscus
  • †Pachydiscus catarinae
  • †Pachydiscus colligatus – or unidentified comparable form
  • †Pachydiscus princeps – type locality for species
  • †Pachydiscus sp.
• †Pachygyra
  • †Pachygyra ilerdensis – or unidentified comparable form
• †Pachymya – tentative report
  • †Pachymya sp.
  • †Pachymya sp. Ainformal
• †Pachyphyllia
  • †Pachyphyllia nannodes
• †Pacificaprina
  • †Pacificaprina pyriformis
• †Pagurus
  • †Pagurus sp.
• †Palaeocardita
  • †Palaeocardita peruviana
• †Palaeoctopus
  • †Palaeoctopus pelagicus – type locality for species
• †Palaeolopha
  • †Palaeolopha haidingeriana – or unidentified comparable form
• †Palaeoneilo
  • †Palaeoneilo elliptica
• †Palaeosaturnalis
  • †Palaeosaturnalis liassicusaff.
  • †Palaeosaturnalis sp. Binformal
  • †Palaeosaturnalis tetraradiatus
• †Palaeoxanthopsis
  • †Palaeoxanthopsis meyapaquensis
• †Palaxius
  • †Palaxius shastaensis
• †Paleoctenodiscus – type locality for genus
  • †Paleoctenodiscus campaniurnus – type locality for species
• †Paleopagurus
  • †Paleopagurus pilsbryi
• †Paleopentacta – type locality for genus
  • †Paleopentacta alencasterae – type locality for species
• †Paleopsephaea – tentative report
• †Paleopsephaea
  • †Paleopsephaea mutabilis
  • †Paleopsephaea sp.
• †Palinandromeda
  • †Palinandromeda sp.
• †Palinurus
  • †Palinurus palaciosi – type locality for species
  • †Palinurus sp.
• †Palorbitolina
  • †Palorbitolina lenticularis
• †Paltechioceras
  • †Paltechioceras burckhardtiex gr.
  • †Paltechioceras mexicanum
• †Pamiropora
  • †Pamiropora sonorensis – type locality for species
  • †Pamiropora sonorensis
• †Pamiroseris
  • †Pamiroseris rectilamellosa
• †Pamizinsaurus – type locality for genus
  • †Pamizinsaurus tlayuanensis – type locality for species
• †Pandanus – or unidentified comparable form
  • †Pandanus sp.
• †Panopea – tentative report
• †Panopea – or unidentified comparable form
• †Panopea
  • †Panopea gurgitis
  • †Panopea neocomiensis
  • †Panopea remondii – type locality for species
  • †Panopea sp.
• †Pantanellium
  • †Pantanellium cantuchapai
  • †Pantanellium carlense
  • †Pantanellium deflectum
  • †Pantanellium formosum – or unidentified comparable form
  • †Pantanellium formosum
  • †Pantanellium heimi
  • †Pantanellium huazalingoense
  • †Pantanellium inornatum
  • †Pantanellium meraceibaense
  • †Pantanellium parvulum
  • †Pantanellium quintachillaense
  • †Pantanellium ranchitoense
  • †Pantanellium silberlingi – type locality for species
  • †Pantanellium silberlingi
  • †Pantanellium skedansense
  • †Pantanellium sp.
  • †Pantanellium sp. Ainformal
  • †Pantanellium sp. Binformal
  • †Pantanellium sp. Einformal
  • †Pantanellium tierrablancaense
  • †Pantanellium tozeri – type locality for species
  • †Pantanellium tozeri
  • †Pantanellium westermanni
  • †Pantanellium whalenae
• †Pantojaloria – type locality for genus
• †Pantojaloria
  • †Pantojaloria sphaerica – type locality for species
  • †Pantojaloria sphaerica
• †Paracalycoceras
  • †Paracalycoceras sp.
• †Paracanthoplites
  • †Paracanthoplites sp.
• †Parachaetetes – or unidentified comparable form
  • †Parachaetetes sp.
• †Paraclupea – or unidentified comparable form
  • †Paraclupea sp.
• †Paracoskinolina
  • †Paracoskinolina sunnilandensi
  • †Paracoskinolina sunnilandensis
• †Paracrochordiceras – or unidentified comparable form
  • †Paracrochordiceras sp.
• †Paracycloseris
  • †Paracycloseris effrenatus – type locality for species
  • †Paracycloseris nariensis
• †Paracymatoceras
  • †Paracymatoceras milleri
• †Paracypris
  • †Paracypris sp.
• †Paraglauconia
  • †Paraglauconia sp.
• †Parahoplites
  • †Parahoplites consobrinusaff.
  • †Parahoplites fasciculatus
  • †Parahoplites melchiorisaff.
  • †Parahoplites milletianusaff.
  • †Parahoplites milletianus
  • †Parahoplites sp.
• †Parahsuum – tentative report
• †Parahsuum
  • †Parahsuum mostleri
  • †Parahsuum simplumaff.
  • †Parahsuum simplum
  • †Parahsuum sp. Ainformal
  • †Parahsuum transiens – or unidentified comparable form
  • †Parahsuum vizcainoense – type locality for species
• †Parallelodon
  • †Parallelodon hirsonensis – or unidentified comparable form
• †Paranevadites
  • †Paranevadites furlongi – or unidentified comparable form
• †Parapachydiscus
  • †Parapachydiscus catarinae – type locality for species
  • †Parapachydiscus peninsularis – type locality for species
• †Parapsolus – type locality for genus
  • †Parapsolus tlayuensis – type locality for species
• †Parasaynoceras
  • †Parasaynoceras mexicanum
• †Parastrenoceras
  • †Parastrenoceras mixtecum
  • †Parastrenoceras sp.
  • †Parastrenoceras zapotecum
• †Parastroma
  • †Parastroma sp.
• †Paravascoceras
  • †Paravascoceras angermanni
  • †Paravascoceras carteri
• †Parazanthopsis
  • †Parazanthopsis meyapaquensis
• †Paretallonia
  • †Paretallonia hispaniensis
• †Paronaella – tentative report
• †Paronaella
  • †Paronaella broennimanni
  • †Paronaella carteri
  • †Paronaella corpulenta
  • †Paronaella festiva
  • †Paronaella grahamensis
  • †Paronaella multifera – or unidentified comparable form
  • †Paronaella multifera
  • †Paronaella notabilis – type locality for species
  • †Paronaella notabilis
  • †Paronaella obesa – or unidentified comparable form
  • †Paronaella pristidentata – or unidentified comparable form
  • †Paronaella snowshoensis
  • †Paronaella sp.
  • †Paronaella sp. Ainformal
  • †Paronaella sp. Binformal
  • †Paronaella sp. Cinformal
  • †Paronaella variabilis
• †Paronella
  • †Paronella sp.
• †Parrasites
  • †Parrasites victoriensis – or unidentified comparable form
  • †Parrasites victoriensis
• †Parvicingula – tentative report
• †Parvicingula
  • †Parvicingula colemani
  • †Parvicingula enormis
  • †Parvicingula excelsa
  • †Parvicingula jonesi – or unidentified comparable form
  • †Parvicingula sp.
  • †Parvicingula yehae
• †Parvivacca
  • †Parvivacca blomei
  • †Parvivacca simplex – or unidentified comparable form
  • †Parvivacca simplex
• †Pecopteris
  • †Pecopteris falcatus
• †Pecten
  • †Pecten morrisi – or unidentified comparable form
  • †Pecten roemeri
  • †Pecten sp.
  • †Pecten subalpina
  • †Pecten texanus
• †Pedioceras
  • †Pedioceras sp.
• †Pelourdea
  • †Pelourdea sp.
• †Pelourdia
  • †Pelourdia sp.
• †Peltocrioceras – tentative report
  • †Peltocrioceras sp.
• †Penaceras
  • †Penaceras rursiradiatus
  • †Penaceras stoyanovi – type locality for species
• †Penecallista
  • †Penecallista marina
• †Pentacoenia
  • †Pentacoenia pulchella
• †Pentacrinus
  • †Pentacrinus sp.
• †Perezlaria
  • †Perezlaria oaxacensis
• †Periplomya
  • †Periplomya sulcatina
• †Perispyridium
  • †Perispyridium delicatumaff.
  • †Perispyridium delicatum
  • †Perispyridium neotamanense
  • †Perispyridium sp.
  • †Perispyridium tamanense
• †Perissitys
  • †Perissitys colocara
• †Perissoptera – tentative report
  • †Perissoptera sp.
• †Permocalculus
  • †Permocalculus sp.
• †Peroniceras
  • †Peroniceras sp.
  • †Peroniceras subtricarinatumaff.
  • †Peroniceras subtricarinatun – or unidentified comparable form
  • †Peroniceras tricarinatumaff.
  • †Peroniceras tridorsatum
• †Peruviella
  • †Peruviella gerthi
  • †Peruviella sp.
• †Petalodontia
  • †Petalodontia sp.
• †Phacellocoenia
  • †Phacellocoenia tolmachoffana
• †Phaneroptyxis
  • †Phaneroptyxis anguillina
• †Phantum
  • †Phantum insperatum
• †Phaulostephanus
  • †Phaulostephanus burckhardti – type locality for species
• †Phlebopteris
  • †Phlebopteris angustiloba
  • †Phlebopteris branneri
  • †Phlebopteris smithii
• †Pholadomya – or unidentified comparable form
• †Pholadomya
  • †Pholadomya ambigua – or unidentified comparable form
  • †Pholadomya coahuilensis
  • †Pholadomya diegoensis
  • †Pholadomya fidicula – or unidentified comparable form
  • †Pholadomya fidicula
  • †Pholadomya gigantea – or unidentified comparable form
  • †Pholadomya gigantea
  • †Pholadomya idea
  • †Pholadomya pedernalis – or unidentified comparable form
  • †Pholadomya sanctae-crucis
  • †Pholadomya sp.
  • †Pholadomya voltzi – or unidentified comparable form
• †Phylloceras – or unidentified comparable form
• †Phylloceras
  • †Phylloceras serum
  • †Phylloceras sp.
  • †Phylloceras velledae
• †Phyllopachyceras
  • †Phyllopachyceras forbesianum
• †Phyllotheca – tentative report
  • †Phyllotheca sp.
• †Phymosoma
  • †Phymosoma volanum – or unidentified comparable form
• †Physa
  • †Physa copeiaff.
• †Piazopteris – tentative report
  • †Piazopteris sp.
• †Pinna – or unidentified comparable form
• †Pinna
  • †Pinna folium – or unidentified comparable form
  • †Pinna laqueata
  • †Pinna quadrifrons
  • †Pinna sp.
• †Pisotrigonia
  • †Pisotrigonia sp.
• †Placenticeras
  • †Placenticeras fritschi
  • †Placenticeras syrtale
  • †Placenticeras whitfieldi
• †Placocoenia
  • †Placocoenia major
  • †Placocoenia sp. – type locality for species
• †Placophyllia
  • †Placophyllia bandeli
  • †Placophyllia chihuahuensis – type locality for species
• †Placopsilina
  • †Placopsilina sp.
• †Placosmilia
  • †Placosmilia sp.
• †Placunopsis
  • †Placunopsis sp.
• †Plafkerium
  • †Plafkerium abbotti – type locality for species
  • †Plafkerium abbotti
  • †Plafkerium hindei – type locality for species
  • †Plafkerium hindei
• †Plagioptychus
  • †Plagioptychus agariciformis
  • †Plagioptychus jamaicensis
  • †Plagioptychus muellerriedi
  • †Plagioptychus sp.
• †Plagiostoma
  • †Plagiostoma exaltata – or unidentified comparable form
  • †Plagiostoma kanei
  • †Plagiostoma punctatum – or unidentified comparable form
  • †Plagiostoma schimperi
  • †Plagiostoma sp. Ainformal
• †Planolites
  • †Planolites sp.
• †Platycaryaaff.
• †Platycarya – or unidentified comparable form
  • †Platycarya sp.
• †Pleesus
  • †Pleesus sp. Ainformal
• †Plesiastrea – report made of unidentified related form or using admittedly obsolete nomenclature
• †Plesiastrea
  • †Plesiastrea moravica – type locality for species
  • †Plesiastrea sulcatilamellosa
• †Plesiosaurus – type locality for genus
  • †Plesiosaurus mexicanus – type locality for species
• †Pleuromya
  • †Pleuromya sp.
  • †Pleuromya tellina
  • †Pleuromya uniformis
• †Pleurophyllia
  • †Pleurophyllia microsa – type locality for species
  • †Pleurophyllia trichotomaaff.
• †Pleurostylina
  • †Pleurostylina major – type locality for species
• †Pleurotomaria
  • †Pleurotomaria sp.
  • †Pleurotomaria sp. Binformal
• †Plicatulaaff.
• †Plicatula
  • †Plicatula azulensis
  • †Plicatula batnensis
  • †Plicatula incongrua
  • †Plicatula pulchra
  • †Plicatula sp. – type locality for species
  • †Plicatula sp.
  • †Plicatula sp. Ainformal
  • †Plicatula subgurgitis
  • †Plicatula torreoensis
  • †Plicatula umbonata
• †Podobursa
  • †Podobursa lata
  • †Podobursa rosea
  • †Podobursa sp.
  • †Podobursa tetracola
  • †Podobursa triacantha
• †Podocapsa – tentative report
• †Podocapsa
  • †Podocapsa abreojosensis – type locality for species
  • †Podocapsa abreojosensis
  • †Podocapsa amphitreptera – or unidentified comparable form
  • †Podocapsa amphitreptera
  • †Podocapsa foremanae
  • †Podocapsa sp.
  • †Podocapsa sp. Ainformal
• †Podophthalmus
  • †Podophthalmus sp.
• †Podozamites
  • †Podozamites sp.
• †Polyphylloseris
  • †Polyphylloseris conophora
  • †Polyphylloseris convexa
  • †Polyphylloseris distefanoi
  • †Polyphylloseris iwateensis
  • †Polyphylloseris polymorpha
• †Polyptychites
  • †Polyptychites sp.
• †Polyptychoceras
  • †Polyptychoceras sp.
• †Polystrata
  • †Polystrata alba
• †Polytremacis
  • †Polytremacis tehuacanensis
• †Polzia
  • †Polzia eldoctorensis
• †Porituberoolithus
  • †Porituberoolithus sp.
• †Potamides
  • †Potamides ancestralus
  • †Potamides temalacensis
• †Potosites – type locality for genus
• †Potosites
  • †Potosites tristantorresi – type locality for species
  • †Potosites tristantorresi
• †Praebarrettia
  • †Praebarrettia sparcilirata
• †Praecaprina
  • †Praecaprina sp.
• †Praechrysalidina
  • †Praechrysalidina infracretacea
  • †Praechrysalidina sp.
• †Praeconocaryomma
  • †Praeconocaryomma bajaensis
  • †Praeconocaryomma decoraex gr.
  • †Praeconocaryomma mediaaff.
  • †Praeconocaryomma scatebra
  • †Praeconocaryomma sp.
• †Praeconosphaera
  • †Praeconosphaera multiconus
  • †Praeconosphaera sphaeroconus – or unidentified comparable form
  • †Praeconosphaera sphaeroconus
  • †Praeconosphaera spinosa
• †Praeglobotruncana
  • †Praeglobotruncana rioensis
• †Praehexasaturnalis
  • †Praehexasaturnalis tetraradiatus
• †Praeparvicingula – tentative report
• †Praeparvicingula
  • †Praeparvicingula blomei
  • †Praeparvicingula discors
  • †Praeparvicingula holdsworthi
  • †Praeparvicingula sp.
• †Prehepatus
  • †Prehepatus harrisi
• †Preverastraea
  • †Preverastraea coatlicuae – type locality for species
  • †Preverastraea coatlicuae
  • †Preverastraea felixi
  • †Preverastraea paronai
  • †Preverastraea roveretoi
  • †Preverastraea tocae – type locality for species
  • †Preverastraea tocae
• †Prionocyclus
  • †Prionocyclus hyatti
• †Prisconatica
  • †Prisconatica pedernalis
• †Prismatoolithus – tentative report
  • †Prismatoolithus sp.
• †Procerithium – tentative report
• †Procerithium
  • †Procerithium beali
  • †Procerithium fraasi
  • †Procerithium kirki
  • †Procerithium poblana
• †Prohinnites
  • †Prohinnites ordonesi
• †Prolyelliceras
  • †Prolyelliceras prorsocurvatumaff.
• †Promathildia
  • †Promathildia sp.
• †Proniceras
  • †Proniceras sp.
• †Propeamussium
  • †Propeamussium schafhaeutli – or unidentified comparable form
• †Prosogyrotrigonia
  • †Prosogyrotrigonia sp. Ainformal
• †Protaegla
  • †Protaegla miniscula
  • †Protaegla minuscula
• †Protancyloceras
  • †Protancyloceras catalinense – or unidentified comparable form
  • †Protancyloceras sp.
• †Protocallianassa
  • †Protocallianassa sp.
• †Protocardia – tentative report
• †Protocardia
  • †Protocardia dufrenoyca
  • †Protocardia luggudensis
  • †Protocardia pesolina – or unidentified comparable form
  • †Protocardia sp.
  • †Protocardia sp. Ainformal
  • †Protocardia stonei
  • †Protocardia striatula
  • †Protocardia texana – tentative report
  • †Protocardia texana – or unidentified comparable form
  • †Protocardia texana
  • †Protocardia truncata
• †Protochelydra – or unidentified comparable form
  • †Protochelydra sp.
• †Protoplatyrhina
  • †Protoplatyrhina sp.
• †Protovallupus
  • †Protovallupus excellens
  • †Protovallupus sp.
  • †Protovallupus sp. Ainformal
  • †Protovallupus sp. Binformal
  • †Protovallupus tetlamaensis
  • †Protovallupus vaticinus
• †Pseudaspidoceras
  • †Pseudaspidoceras flexuosum
  • †Pseudaspidoceras footeanum
  • †Pseudaspidoceras pseudonodosoides
  • †Pseudaspidoceras sp.
• †Pseudocrucella
  • †Pseudocrucella haeckeli
  • †Pseudocrucella sp.
• †Pseudoctenis – or unidentified comparable form
• †Pseudoctenis
  • †Pseudoctenis lanei
  • †Pseudoctenis sp.
• †Pseudocyclammina
  • †Pseudocyclammina lituus
  • †Pseudocyclammina sp.
• †Pseudocymia – tentative report
  • †Pseudocymia kilmeri – type locality for species
• †Pseudoepimastopora
  • †Pseudoepimastopora jurassica
• †Pseudoeucyrtis
  • †Pseudoeucyrtis angusta
• †Pseudoguembelina
  • †Pseudoguembelina excolata
• †Pseudohagiastrum
  • †Pseudohagiastrum monstruosum
  • †Pseudohagiastrum sp.
• †Pseudohaploceras
  • †Pseudohaploceras aguilerae
  • †Pseudohaploceras jacobi
  • †Pseudohaploceras liptoviense
  • †Pseudohaploceras matheroni – or unidentified comparable form
  • †Pseudohaploceras matheroni
  • †Pseudohaploceras reesdei
  • †Pseudohaploceras reesidei
• †Pseudoheliodiscus
  • †Pseudoheliodiscus alpinusaff.
  • †Pseudoheliodiscus finchi – type locality for species
  • †Pseudoheliodiscus finchi
  • †Pseudoheliodiscus sp.
  • †Pseudoheliodiscus viejoensis – type locality for species
  • †Pseudoheliodiscus viejoensis
• †Pseudohigumastra
  • †Pseudohigumastra minuta – or unidentified comparable form
  • †Pseudohigumastra minuta
• †Pseudolimea – tentative report
• †Pseudolimea
  • †Pseudolimea sp.
  • †Pseudolimea sp. Ainformal
• †Pseudolituonella
  • †Pseudolituonella sp. – tentative report
• †Pseudomyriophyllia
  • †Pseudomyriophyllia carpathica – or unidentified comparable form
  • †Pseudomyriophyllia carpathica
  • †Pseudomyriophyllia sp.
  • †Pseudomyriophyllia turnsekae
• †Pseudonerinea
  • †Pseudonerinea stantoni
  • †Pseudonerinea stirtoni
• †Pseudopetalodontia – type locality for genus
  • †Pseudopetalodontia felixi
• †Pseudopisthophyllum
  • †Pseudopisthophyllum quinqueseptatum
• †Pseudoplicapollis
  • †Pseudoplicapollis sp.
• †Pseudopoulpus
  • †Pseudopoulpus sp. Ainformal
• †Pseudorhaetina
  • †Pseudorhaetina antimoniensis – type locality for species
  • †Pseudorhaetina antimoniensis
• †Pseudoschloenbachia
  • †Pseudoschloenbachia mexicanaaff.
  • †Pseudoschloenbachia mexicana
• †Pseudosculdidae
  • †Pseudosculdidae sp.
• †Pseudosubplanites
  • †Pseudosubplanites jauberti – or unidentified comparable form
• †Pseudotextularia
  • †Pseudotextularia elegans
  • †Pseudotextularia intermedia
• †Pseudotissotia
  • †Pseudotissotia galliennei
  • †Pseudotissotia nigeriense – or unidentified comparable form
• †Pseudoxybeloceras
  • †Pseudoxybeloceras sp.
• †Psilogyra
  • †Psilogyra greaca – or unidentified comparable form
• †Psilotissotia
  • †Psilotissotia sp.
• †Pteraichnus – or unidentified comparable form
• †Pteraichnus
  • †Pteraichnus sp.
• †Pteria
  • †Pteria aguilerae
• †Pterocerella
  • †Pterocerella sp.
• †Pterophyllum – tentative report
• †Pterophyllum
  • †Pterophyllum fragile
  • †Pterophyllum inaequale
  • †Pterophyllum longifolium
  • †Pterophyllum munsteri – or unidentified comparable form
  • †Pterophyllum propiquum
  • †Pterophyllum rajmahalense
  • †Pterophyllum robustum
  • †Pterophyllum sp.
  • †Pterophyllum spinosum – type locality for species
  • †Pterophyllum spp.
• †Pterotrigonia – tentative report
• †Pterotrigonia
  • †Pterotrigonia plicatocostata
  • †Pterotrigonia sp.
  • †Pterotrigonia stolleyi
• †Ptilophyllum – or unidentified comparable form
• †Ptilophyllum
  • †Ptilophyllum acutifolium
  • †Ptilophyllum cutchense
  • †Ptilophyllum sp.
• †Ptilorhynchia
  • †Ptilorhynchia durangensis
  • †Ptilorhynchia imlayi – type locality for species
• †Ptychoceras
  • †Ptychoceras gracillimum
  • †Ptychoceras mazapilense
• †Ptychodus
  • †Ptychodus mortoni – or unidentified comparable form
• †Ptychomya
  • †Ptychomya densicostata – tentative report
  • †Ptychomya stantoni
• †Ptychotrygon
  • †Ptychotrygon sp.
• †Pugnellus
  • †Pugnellus densatus
• †Pulchellia
  • †Pulchellia sp.
• †Purpuroidea – tentative report
  • †Purpuroidea acatlana
• †Puzosia
  • †Puzosia austeniaff.
  • †Puzosia kilianiaff.
  • †Puzosia kiliani – or unidentified comparable form
  • †Puzosia mayorianaaff.
  • †Puzosia mayoriana – or unidentified comparable form
  • †Puzosia nolaniaff.
  • †Puzosia provincialeaff.
  • †Puzosia serratocarinata – type locality for species
  • †Puzosia sp.
• †Pycnodonte
  • †Pycnodonte sp.
  • †Pycnodonte vesicularis
• †Pygopyrina
  • †Pygopyrina sp.
• †Pyrazus
  • †Pyrazus austinense
  • †Pyrazus durhami
  • †Pyrazus maldonadoi – type locality for species
  • †Pyrazus maldonadoi
  • †Pyrazus scalariformis – or unidentified comparable form
  • †Pyrazus sp.
  • †Pyrazus valeriae
• †Pyrgo
  • †Pyrgo sp. – or unidentified comparable form
• †Pyrgopolon
  • †Pyrgopolon macropus
• †Pyropsis
  • †Pyropsis lanhami
• †Pyzarus – tentative report
  • †Pyzarus harrissi
• †Quadratotrigonia
  • †Quadratotrigonia guildi
  • †Quadratotrigonia mearnsi
• †Quercus
  • †Quercus sp.
• †Quetzalichthys – type locality for genus
  • †Quetzalichthys perrilliatae – type locality for species
• †Quinqueloculina
  • †Quinqueloculina sp.
• †Quitmaniceras
  • †Quitmaniceras reaseri
• †Radiolites – report made of unidentified related form or using admittedly obsolete nomenclature
• †Radiolites
  • †Radiolites acutocostata
  • †Radiolites costata – or unidentified comparable form
  • †Radiolites costata
  • †Radiolites macroplicatus
  • †Radiolites sp.
• †Rastellum
  • †Rastellum sp.
• †Rectocyclammina
  • †Rectocyclammina chouberti
• †Religa
  • †Religa globosa – type locality for species
  • †Religa globosa
• †Remera
  • †Remera sp.
• †Reptomulticava
  • †Reptomulticava sp.
• †Requienia
  • †Requienia sp.
• †Resatrix
  • †Resatrix sp.
• †Retinomocolpites
  • †Retinomocolpites sp.
• †Retiophyllia
  • †Retiophyllia norica
  • †Retiophyllia opelli – or unidentified comparable form
  • †Retiophyllia oppeli
  • †Retiophyllia sp.
• †Rhabdocarpus
  • †Rhabdocarpus sp.
• †Rhabdoceras
  • †Rhabdoceras suessi – or unidentified comparable form
• †Rhacolephis – or unidentified comparable form
  • †Rhacolephis sp.
• †Rhinobatos
  • †Rhinobatos sp.
• †Rhipidastraea
  • †Rhipidastraea soukupi
• †Rhipidomeandra
  • †Rhipidomeandra bugrovae
• †Rhynchodercetis
  • †Rhynchodercetis regio
• †Rhynchonella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Rhynchonella
  • †Rhynchonella apicalisaff.
  • †Rhynchonella durangensis – type locality for species
  • †Rhynchonella durangensis
  • †Rhynchonella miquihuanensis
  • †Rhynchonella nuciformis
  • †Rhynchonella sp.
• †Rhytidoplites
  • †Rhytidoplites robertsi
• †Richardoestesia
  • †Richardoestesia isosceles
• †Rimella
  • †Rimella mexcala – type locality for species
• †Ringicula
  • †Ringicula clarki – or unidentified comparable form
• †Ristola
  • †Ristola firma
• †Rodighieroites
  • †Rodighieroites belimelensis
• †Roemerus
  • †Roemerus robustus
• †Romaniceras
  • †Romaniceras kanei
  • †Romaniceras mexicanum
  • †Romaniceras ornatissimum
  • †Romaniceras reymenti
  • †Romaniceras sp.informal
  • †Romaniceras sp.
• †Rosita
  • †Rosita fornicata
• †Rotalipora
  • †Rotalipora appenninica
  • †Rotalipora sp.
• †Rugoglobigerina
  • †Rugoglobigerina hexacamerata
  • †Rugoglobigerina macrocephala
  • †Rugoglobigerina rugosa
• †Rugotruncana
  • †Rugotruncana subpenny
• †Rutitrigonia
  • †Rutitrigonia weaveri
• †Sabinosuchus – type locality for genus
  • †Sabinosuchus coahuilensis – type locality for species
• †Sagenopteris
  • †Sagenopteris sp.
• †Saitoum – tentative report
  • †Saitoum sp.
• †Salenia
  • †Salenia texana
• †Salinites
  • †Salinites grossicostatum
  • †Salinites inflatum
• †Saltocyathus
  • †Saltocyathus cumburindioensis – type locality for species
• †Salvinia
  • †Salvinia coahuilensis
• †Santonaella
  • †Santonaella longoriai
  • †Santonaella obesa – or unidentified comparable form
  • †Santonaella obesa
• †Saracenaria
  • †Saracenaria bononiensis
  • †Saracenaria sp.
• †Sarasinella – tentative report
  • †Sarasinella sp.
• †Sarla
  • †Sarla natividadensis – type locality for species
  • †Sarla natividadensis
  • †Sarla prietoensis – type locality for species
  • †Sarla prietoensis
  • †Sarla sp.
  • †Sarla sp. Ainformal
  • †Sarla sp. Binformal
  • †Sarla vetusta – type locality for species
  • †Sarla vetusta
  • †Sarla vizcainoensis – type locality for species
  • †Sarla vizcainoensis
• †Sauvagesia
  • †Sauvagesia coloradensis – or unidentified comparable form
  • †Sauvagesia morgani – type locality for species
  • †Sauvagesia sp.
  • †Sauvagesia texana
• †Scapanorhynchus – or unidentified comparable form
• †Scapanorhynchus
  • †Scapanorhynchus sp.
• †Scaphites
  • †Scaphites aequalisaff.
  • †Scaphites bosquensis – or unidentified comparable form
  • †Scaphites bosquensis
  • †Scaphites frontierensis
  • †Scaphites hippocrepisex gr.
  • †Scaphites hugardianus – or unidentified comparable form
  • †Scaphites meslei
  • †Scaphites preventricosus
  • †Scaphites uintensis
• †Schafhaeutlia
  • †Schafhaeutlia sp.
• †Schizorhiza
  • †Schizorhiza stromeri
• †Schloenbachia
  • †Schloenbachia chihauhuensis
  • †Schloenbachia utaturensis – or unidentified comparable form
• †Schneidia
  • †Schneidia lopeztichai – type locality for species
• †Sciponoceras
  • †Sciponoceras baculoideaff.
  • †Sciponoceras baculoide – or unidentified comparable form
• †Scoresbya
  • †Scoresbya dentata
  • †Scoresbya pinnata
• †Scotiophryne
  • †Scotiophryne sp.
• †Selaginella
  • †Selaginella sp.
• †Sellithyris
  • †Sellithyris coahuilensis
• †Selwynoceras
  • †Selwynoceras mexicanum
• †Semineritina
  • †Semineritina apparata
• †Septocardia
  • †Septocardia sp.
• †Serpula
  • †Serpula socialisaff.
• †Serratolamna
  • †Serratolamna serrata
• †Sethocapsa
  • †Sethocapsa sp.
• †Sharpeiceras
  • †Sharpeiceras laticlavium
• †Shastasaurus
  • †Shastasaurus pacificus
• †Siderastrea
  • †Siderastrea adkinsi
  • †Siderastrea vancouverensis
• †Siderofungia – tentative report
• †Siderofungia
  • †Siderofungia irregularis
  • †Siderofungia zitteli
• †Silesites
  • †Silesites sp.
• †Sirenites
  • †Sirenites nanseni
  • †Sirenites ovinus
• †Sodakus
  • †Sodakus mexicanus
• †Solenoceras
  • †Solenoceras elegans
  • †Solenoceras texanum
• †Solenopora – or unidentified comparable form
  • †Solenopora sp.
• †Somphocrinus – type locality for genus
  • †Somphocrinus mexicanus – type locality for species
• †Sonoraphyllum – type locality for genus
  • †Sonoraphyllum mirabile – type locality for species
• †Spathites
  • †Spathites coahuilensis
  • †Spathites puercoensis
  • †Spathites rioensis – type locality for species
  • †Spathites sp.
• †Sphaera – report made of unidentified related form or using admittedly obsolete nomenclature
• †Sphaera
  • †Sphaera americanus
  • †Sphaera corrugata
  • †Sphaera sp.
• †Sphaeromatidae
  • †Sphaeromatidae sp.
• †Sphagnum
  • †Sphagnum sp.
• †Sphenodiscus
  • †Sphenodiscus aberrans – type locality for species
  • †Sphenodiscus intermedius
  • †Sphenodiscus lobatus
  • †Sphenodiscus pleurisepta
  • †Sphenodiscus prepleurisepta
  • †Sphenodiscus sp.
• †Sphenopteris
  • †Sphenopteris goeppertii
  • †Sphenopteris sp.
• †Sphenovipera – type locality for genus
  • †Sphenovipera jimmysjoyi – type locality for species
• †Sphenozamites
  • †Sphenozamites sp.
• †Spheroolithus
  • †Spheroolithus sp.
• †Spiticeras
  • †Spiticeras kilianiaff.
• †Spondylospira
  • †Spondylospira lewesensis
• †Spondylus
  • †Spondylus oballosensis
  • †Spondylus sp.
  • †Spondylus subnodosus
• †Spriogmoceras
  • †Spriogmoceras shastense
• †Squalicorax
  • †Squalicorax bassanii – or unidentified comparable form
  • †Squalicorax sp.
• †Squatirhina
  • †Squatirhina sp.
• †Stangerites
  • †Stangerites sp.
• †Stauromesosaturnalis
  • †Stauromesosaturnalis deweveri – type locality for species
  • †Stauromesosaturnalis deweveri
• †Stelidioseris
  • †Stelidioseris minima
• †Stenopteris
  • †Stenopteris desmomera – or unidentified comparable form
• †Stephanoceras
  • †Stephanoceras boulderense
  • †Stephanoceras skidegatense – or unidentified comparable form
  • †Stephanoceras sp.
• †Stephanodus – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Stephanodus sp.
• †Stephanophyllia
  • †Stephanophyllia cribraria
• †Stephanosphinctes – type locality for genus
  • †Stephanosphinctes buitroni – type locality for species
• †Stiboriopsis
  • †Stiboriopsis azteca – type locality for species
  • †Stiboriopsis sonoraensis – type locality for species
  • †Stiboriopsis sonoraensis
• †Stichocapsa
  • †Stichocapsa sp. Ainformal
• †Stichomitra – tentative report
  • †Stichomitra matsuokai
• †Stoliczkaia
  • †Stoliczkaia crotaloides
  • †Stoliczkaia scotti
  • †Stoliczkaia sp.
  • †Stoliczkaia texana
• †Stomiosphaera
  • †Stomiosphaera sphaerica
• †Stramentum
  • †Stramentum sp.
• †Striarca
  • †Striarca sp.
• †Striaticostatum
  • †Striaticostatum bexarense – or unidentified comparable form
• †Striatornata – type locality for genus
• †Striatornata
  • †Striatornata sanantoniensis – type locality for species
  • †Striatornata sanantoniensis
• †Strigoceras
  • †Strigoceras kellumi – or unidentified comparable form
  • †Strigoceras pseudostrigifer – or unidentified comparable form
• †Stromaporidium
  • †Stromaporidium lamellatum – type locality for species
• †Stygimys – tentative report
  • †Stygimys sp.
• †Stylangia
  • †Stylangia neocomiensis
• †Stylina
  • †Stylina bullosa
  • †Stylina inwaldensis
  • †Stylina lobata
  • †Stylina pachystylina
  • †Stylina regularis
  • †Stylina sablensis
  • †Stylina sugiyamai
• †Stylosmilia
  • †Stylosmilia gregorii
• †Subcollina
  • †Subcollina lucretia
• †Subpulchellia
  • †Subpulchellia sp.
• †Subvenericardia
  • †Subvenericardia sp.
• †Suna
  • †Suna echiodes – or unidentified comparable form
  • †Suna pessagnoi – type locality for species
  • †Suna sp.
• †Supervallupus
  • †Supervallupus haeckeli
  • †Supervallupus sp.
• †Sutneria
  • †Sutneria sp.
• †Sympolycyclus
  • †Sympolycyclus nodifer
• †Synastrea
  • †Synastrea agaricites – or unidentified comparable form
  • †Synastrea bellula
  • †Synastrea decipiens
• †Syncyclonema
  • †Syncyclonema sp.
• †Syringocapsa
  • †Syringocapsa lata
  • †Syringocapsa sp.
  • †Syringocapsa suavis
• †Taeniopteris
  • †Taeniopteris elegans
  • †Taeniopteris oaxacensis – type locality for species
  • †Taeniopteris oaxacensis
• †Tamaulipasaurus – type locality for genus
  • †Tamaulipasaurus morenoi – type locality for species
• †Tampsia
  • †Tampsia floriformis
• †Tancredia
  • †Tancredia subcurtansata – or unidentified comparable form
• †Taraisites
  • †Taraisites tenuicostatus
• †Taramelliceras
  • †Taramelliceras sp.
• †Tectus – tentative report
• †Tectus
  • †Tectus texanus
  • †Tectus thalmanni
  • †Tectus tomasensis
• †Teichertus
  • †Teichertus cavernosus
  • †Teichertus splendicus
• †Tellina
  • †Tellina sp.
• †Teoichthys
  • †Teoichthys brevipina – type locality for species
  • †Teoichthys kallistos
• †Tepexicarcinus
  • †Tepexicarcinus tlayuaensis
• †Tepexichthys
  • †Tepexichthys aranguthyrom
• †Tepexisaurus – type locality for genus
  • †Tepexisaurus tepexii – type locality for species
• †Tepeyacia
  • †Tepeyacia corrugata
  • †Tepeyacia gregaria
• †Terebratula
  • †Terebratula coahuilensis
  • †Terebratula kanei
  • †Terebratula sillimani
  • †Terebratula tamaulipana
• †Tetraditryma – tentative report
• †Tetraditryma
  • †Tetraditryma emilei
  • †Tetraditryma pseudoplena
  • †Tetraditryma sp.
• †Tetragonites
  • †Tetragonites silencioensis – type locality for species
  • †Tetragonites zacatecanum
• †Tetratrabs – tentative report
• †Tetratrabs
  • †Tetratrabs bulbosa
  • †Tetratrabs sp. Ainformal
  • †Tetratrabs sp. Binformal
  • †Tetratrabs zealis
• †Tetriastrum
  • †Tetriastrum tenue
• †Texanites
  • †Texanites dentatocarinata
• †Texicaprina
  • †Texicaprina kugleri
  • †Texicaprina sp.
  • †Texicaprina vivari
• †Textularia
  • †Textularia chapmani – tentative report
• †Thalassinoides
  • †Thalassinoides sp.
• †Thamnarea
  • †Thamnarea hornosensis – type locality for species
• †Thamnasteria
  • †Thamnasteria felixi – type locality for species
  • †Thamnasteria lamourouxii – or unidentified comparable form
  • †Thamnasteria mcoyi
  • †Thamnasteria tonantzinae – type locality for species
• †Thamnoseris – tentative report
• †Thamnoseris
  • †Thamnoseris arborescens
  • †Thamnoseris arnaudi
  • †Thamnoseris dolerenzoi
• †Thaumatopteris
  • †Thaumatopteris kochibei – or unidentified comparable form
• †Thecidiosmilia
  • †Thecidiosmilia morycowae
• †Thecosmilia – type locality for genus
• †Thecosmilia
  • †Thecosmilia bassanii
  • †Thecosmilia guerreroensis – type locality for species
  • †Thecosmilia longimana
  • †Thecosmilia oaxaquensis – type locality for species
  • †Thecosmilia sandbergeri
  • †Thecosmilia tobleri
• †Thetisolala
  • †Thetisolala oblonga
• †Thirastylon
  • †Thirastylon chubby
• †Thomasites
  • †Thomasites adkinsi
• †Thurmanniceras
  • †Thurmanniceras novhispanicus
  • †Thurmanniceras sp.
  • †Thurmanniceras thurmanni
• †Thurmannites – or unidentified comparable form
• †Thurmannites
  • †Thurmannites angusticostatus
  • †Thurmannites miquihuanensis
  • †Thurmannites novihispanicus
• †Thyrastylon
  • †Thyrastylon chubbi
• †Tirolites
  • †Tirolites sp.
• †Titanosarcolites
  • †Titanosarcolites giganteus
  • †Titanosarcolites macgillavryi
• †Tlahualiloceras
  • †Tlahualiloceras tlahualiloensis – type locality for species
• †Todites
  • †Todites carrilloi
• †Toretocnemus
  • †Toretocnemus californicus
• †Torgnellus
  • †Torgnellus sp.
• †Torreites
  • †Torreites sanchezi
• †Tototlmimus – type locality for genus
  • †Tototlmimus packardensis – type locality for species
• †Toucasia
  • †Toucasia hancockensis
  • †Toucasia polygyra – type locality for species
  • †Toucasia sp.
• †Toxaster
  • †Toxaster sp.
• †Trachysagenites
  • †Trachysagenites herbichi
• †Trachyscaphites
  • †Trachyscaphites sp.
• †Trachystenoceras
  • †Trachystenoceras gabbi
• †Trapezium – tentative report
• †Trapezium
  • †Trapezium diversicostatum
  • †Trapezium subtriangulum
• †Traskites
  • †Traskites fairbanksi
  • †Traskites sp.
• †Triactoma – tentative report
• †Triactoma
  • †Triactoma frequens
  • †Triactoma hidalgoensis – or unidentified comparable form
  • †Triactoma hidalgoensis
  • †Triactoma mexicana
  • †Triactoma paramexicana
  • †Triactoma prolongata
  • †Triactoma rosespitensis
  • †Triactoma sp.
  • †Triactoma spinosa – or unidentified comparable form
  • †Triactoma spinosa
  • †Triactoma tenuspinea
• †Trichinopolia
  • †Trichinopolia lata – type locality for species
• †Trichites
  • †Trichites pueblaensis
• †Tricostatocarpon – type locality for genus
  • †Tricostatocarpon silvapinedae – type locality for species
• †Trigonarca – tentative report
• †Trigonarca
  • †Trigonarca depressa – or unidentified comparable form
  • †Trigonarca sp.
• †Trigonia – or unidentified comparable form
• †Trigonia
  • †Trigonia carinata
  • †Trigonia caudata
  • †Trigonia guadalupae – or unidentified comparable form
  • †Trigonia ingens
  • †Trigonia sp.
  • †Trigonia stolleyi
  • †Trigonia weaveriaff.
• †Trigonocarpus
  • †Trigonocarpus sp.
• †Trionyx
  • †Trionyx sp.
• †Triplomystus
  • †Triplomystus applegatei – type locality for species
• †Tripocyclia – tentative report
• †Tripocyclia
  • †Tripocyclia foremanae
  • †Tripocyclia mascula – or unidentified comparable form
  • †Tripocyclia mascula
  • †Tripocyclia sp.
• †Tristix
  • †Tristix acutangulum
• †Tritrabs – tentative report
• †Tritrabs
  • †Tritrabs casmaliensis – or unidentified comparable form
  • †Tritrabs ewingi
  • †Tritrabs imperfecta
  • †Tritrabs mexicana
  • †Tritrabs worzeli – or unidentified comparable form
• †Triversus
  • †Triversus japonicus – or unidentified comparable form
• †Trochactaeon
  • †Trochactaeon coniformis
  • †Trochactaeon punctatus
  • †Trochactaeon teaensis
  • †Trochactaeon wrighti
• †Trochoceramus
  • †Trochoceramus costaecusaff.
  • †Trochoceramus nahorianensis
  • †Trochoceramus tricostatus – type locality for species
• †Trochocyathus
  • †Trochocyathus speciosus
• †Trochoseris
  • †Trochoseris aperta
• †Trochus
  • †Trochus sp. – type locality for species
• †Tropites
  • †Tropites dilleri
• †Trudopollis
  • †Trudopollis pertrudens – or unidentified comparable form
• †Turbo – tentative report
  • †Turbo gigas
  • †Turbo sp.
• †Turrilites
  • †Turrilites acutusaff.
  • †Turrilites acutus – or unidentified comparable form
  • †Turrilites carrancoi
  • †Turrilites multipunctatus
  • †Turrilites scheuchzeri
  • †Turrilites scheuchzerianus
  • †Turrilites sp.
• †Turritella – tentative report
• †Turritella
  • †Turritella chalybeatensis – or unidentified comparable form
  • †Turritella durhami
  • †Turritella leonensisaff.
  • †Turritella seriatimgranulataaff.
  • †Turritella sp.
  • †Turritella trilira
  • †Turritella vertebroides
  • †Turritella vertibroides
• †Turritelloidea
  • †Turritelloidea minuta
• †Tylosaurus
  • †Tylosaurus kansasensis – or unidentified comparable form
• †Tylostoma – or unidentified comparable form
• †Tylostoma
  • †Tylostoma aguilerai – type locality for species
  • †Tylostoma allisoni
  • †Tylostoma kentense
  • †Tylostoma laharpi
  • †Tylostoma mutabilis
  • †Tylostoma sp.
• †Tyrannosaurus
  • †Tyrannosaurus sp.
• †Tyrsoecus
  • †Tyrsoecus sp.
• †Udalia
  • †Udalia plana
• †Uhligella
  • †Uhligella jacobi – or unidentified comparable form
  • †Uhligella jacobi
  • †Uhligella rebouliaff.
  • †Uhligella sp.
  • †Uhligella subnosocostatum
  • †Uhligella wallerantiaff.
  • †Uhligella zurcheri – or unidentified comparable form
  • †Uhligella zurcheri
• †Unamichthys – type locality for genus
  • †Unamichthys espinosai – type locality for species
• †Vaccinites
  • †Vaccinites inaequicostatus
  • †Vaccinites macgillavryi
  • †Vaccinites sp.
  • †Vaccinites vermunti
• †Vaginulina
  • †Vaginulina debilis
  • †Vaginulina kochii
• †Vaginulinopsis
  • †Vaginulinopsis sp.
• †Valanginites
  • †Valanginites sp.
  • †Valanginites tijerensis
• †Vallecillosaurus – type locality for genus
  • †Vallecillosaurus donrobertoi – type locality for species
• †Vallupus
  • †Vallupus hopsoni
  • †Vallupus japonicus
  • †Vallupus nodosus
  • †Vallupus zeissiaff.
  • †Vallupus zeissi
• †Valvulineria
  • †Valvulineria sp.
• †Vascoceras – tentative report
• †Vascoceras
  • †Vascoceras adunense – or unidentified comparable form
  • †Vascoceras birchbyi
  • †Vascoceras gamai – or unidentified comparable form
  • †Vascoceras harttii
  • †Vascoceras mohovanense – or unidentified comparable form
  • †Vascoceras sp.
• †Vaugonia
  • †Vaugonia sp.
• †Veghicyclia
  • †Veghicyclia austriaca – or unidentified comparable form
• †Velafrons – type locality for genus
  • †Velafrons coahuilensis – type locality for species
• †Veniella
  • †Veniella coahuilaensis
  • †Veniella coahuiloensis
  • †Veniella jamaicensis – or unidentified comparable form
  • †Veniella sp.
  • †Veniella sp. Binformal
• †Veracruciceras
  • †Veracruciceras ruizi
  • †Veracruciceras sp.
• †Vermetus
  • †Vermetus cornejoi
  • †Vermetus sp.
• †Victoriacaris
  • †Victoriacaris muhiensis
• †Victoriaconodon – type locality for genus
  • †Victoriaconodon inaequalis – type locality for species
• †Vinctifer
  • †Vinctifer sp.
• †Viviparus
  • †Viviparus australis
• †Voloshinoides
  • †Voloshinoides murgensisaff.
• †Volutomorpha
  • †Volutomorpha retifera – or unidentified comparable form
• †Watinoceras – tentative report
• †Watinoceras
  • †Watinoceras coloradoense
  • †Watinoceras sp.
• †Weltrichia
  • †Weltrichia sp.
• †Weyla
  • †Weyla alata
  • †Weyla bodenbenderi
  • †Weyla meeki
  • †Weyla titan
  • †Weyla unca
• †Wheeleroxylon – type locality for genus
  • †Wheeleroxylon atascosense – type locality for species
• †Whiteinella
  • †Whiteinella sp.
• †Williamsonia
  • †Williamsonia cuauhtemoci
  • †Williamsonia diquiyui
  • †Williamsonia huitizilipochtlii
  • †Williamsonia huitzilopochtlii
  • †Williamsonia nathorstii
  • †Williamsonia netzahualcoyotlii
  • †Williamsonia oaxacensis
  • †Williamsonia sp.
• †Willimactra
  • †Willimactra matthewsoni
• †Worthenia – tentative report
  • †Worthenia sp.
• †Wrightoceras
  • †Wrightoceras munieri – or unidentified comparable form
• †Xandaros
  • †Xandaros sternbergi
• †Xanthosia
  • †Xanthosia zoquiapensis
• †Xestosina
  • †Xestosina subsella
• †Xiaoshuiculana
  • †Xiaoshuiculana tozeri – type locality for species
• †Xonpepetla – type locality for genus
  • †Xonpepetla rinconensis – type locality for species
• †Xylophagella
  • †Xylophagella sp.
• †Yaadia
  • †Yaadia sp.
• †Yelmochelys – type locality for genus
• †Yelmochelys
  • †Yelmochelys rosarioae – type locality for species
  • †Yelmochelys rosarioae
• †Yezoites
  • †Yezoites subevolutus
• †Zamites
  • †Zamites diquiyui
  • †Zamites feneonis
  • †Zamites fragilisex gr.
  • †Zamites fragilis
  • †Zamites lucerensis
  • †Zamites macombiiaff.
  • †Zamites oaxacensis
  • †Zamites powelliaff.
  • †Zamites sp.
  • †Zamites tribulosus
  • †Zamites truncatus – or unidentified comparable form
• †Zapatadon – type locality for genus
  • †Zapatadon ejidoensis – type locality for species

Cenozoic

• †Abaristophora
  • †Abaristophora sp.
• †Acanthina
  • †Acanthina angelica
  • †Acanthina lugubre
  • †Acanthina lugubris
  • †Acanthina muricata
  • †Acanthina paucilirata
  • †Acanthina spirata
  • †Acanthina tuberculata – or unidentified comparable form
  • †Acanthina tuberculata
• †Acanthinia
  • †Acanthinia emersoni
• †Acanthocardia
  • †Acanthocardia brewerii – or unidentified comparable form
  • †Acanthocardia sorrentoense – or unidentified related form
• †Acanthocybium
  • †Acanthocybium sp.
• †Acanthodesia
  • †Acanthodesia commensale
• †Acar
  • †Acar bailyi
  • †Acar domingensis – or unidentified comparable form
  • †Acar domingensis
  • †Acar gradata
  • †Acar sp. – tentative report
  • †Acar sp.
• †Acesta
  • †Acesta multiradiata
• †Acilia
  • †Acilia castrensis
• †Aclistomycter
  • †Aclistomycter middletoni
• †Acmaea
  • †Acmaea asmi
  • †Acmaea digitalis
  • †Acmaea insessa
  • †Acmaea limatula
  • †Acmaea mesoleuca
  • †Acmaea mitra
  • †Acmaea paleacea
  • †Acmaea pelta
  • †Acmaea persona – or unidentified comparable form
  • †Acmaea persona
  • †Acmaea scabra
  • †Acmaea scutum – or unidentified comparable form
  • †Acmaea scutum
  • †Acmaea sp.
• †Acropora
  • †Acropora cervicornis
  • †Acropora palmata
  • †Acropora panamensis
  • †Acropora saludensis
  • †Acropora sp.
• †Acrostichum
  • †Acrostichum mexicanum – type locality for species
• †Acteocina
  • †Acteocina candei – or unidentified comparable form
  • †Acteocina culcitella
  • †Acteocina inculta
  • †Acteocina lepta
  • †Acteocina melinoides
  • †Acteocina rusa
• †Actinacis – tentative report
• †Actinacis
  • †Actinacis barretti – type locality for species
  • †Actinacis barretti – or unidentified comparable form
  • †Actinacis barretti
  • †Actinacis carribensis
  • †Actinacis sp. – tentative report
  • †Actinacis sp.
• †Actiniscus
  • †Actiniscus pentasterias
• †Actinocyclina
  • †Actinocyclina aster – or unidentified related form
• †Actinocyclus
  • †Actinocyclus ehrenbergi
  • †Actinocyclus ingens
• †Actinocythereis
  • †Actinocythereis grigsbyi
  • †Actinocythereis thomsoni
• †Actinoptychus
  • †Actinoptychus sp.
• †Admetula
  • †Admetula zapoteca
• †Aechmophorus
  • †Aechmophorus occidentalis
• †Aequipecten
  • †Aequipecten andersoni
• †Aesopus
  • †Aesopus murmecoon – or unidentified comparable form
• †Aetiocetus – tentative report
• †Aetiocetus – or unidentified related form
  • †Aetiocetus sp.
• †Aetobatus
  • †Aetobatus smithii
  • †Aetobatus sp.
• †Aetomyleaus
  • †Aetomyleaus sp.
• †Agaricia
  • †Agaricia agaricites
• †Agaronia
  • †Agaronia testacea
• †Agassizia
  • †Agassizia scrobiciilata
• †Agathiphyllia
  • †Agathiphyllia anguillensis
  • †Agathiphyllia antiguensis
  • †Agathiphyllia hilli
  • †Agathiphyllia roxboroughi
• †Agathistoma
  • †Agathistoma felipensis
  • †Agathistoma mariana
• †Agazzizia
  • †Agazzizia sp.
• †Agelaius
  • †Agelaius phoeniceus
• †Agladrillia
  • †Agladrillia boesei – or unidentified comparable form
  • †Agladrillia mauryae – or unidentified comparable form
• †Agriochoerus
  • †Agriochoerus maximus
• †Agriotes
  • †Agriotes succiniferus – type locality for species
• †Agriotherium
  • †Agriotherium schneideri – tentative report
  • †Agriotherium schneideri – or unidentified comparable form
  • †Agriotherium schneideri
  • †Agriotherium sp.
• †Aguascalientia
  • †Aguascalientia wilsoni
• †Aivukus – type locality for genus
• †Aivukus
  • †Aivukus cedrosensis – type locality for species
  • †Aivukus cedrosensis
• †Alabina
  • †Alabina asperoides
• †Alaptus
  • †Alaptus globosicornis – or unidentified comparable form
  • †Alaptus globosicornis
  • †Alaptus pallidicornis
  • †Alaptus sp.
• †Albireo – type locality for genus
• †Albireo
  • †Albireo sp.
  • †Albireo whistleri – type locality for species
  • †Albireo whistleri – or unidentified related form
  • †Albireo whistleri
• †Alepia
  • †Alepia sp.
• †Aletes
  • †Aletes squamigerus
• †Alforjas – or unidentified comparable form
• †Alforjas
  • †Alforjas sp.
  • †Alforjas taylori
• †Allamanda
  • †Allamanda carmenensis – type locality for species
• †Allodesmus – or unidentified related form
• †Allodesmus
  • †Allodesmus sp.
• †Alopias
  • †Alopias sp.
• †Alumeda
  • †Alumeda solorzanokraemerae – type locality for species
• †Aluralagus
  • †Aluralagus bensonensis – or unidentified comparable form
• †Alvania
  • †Alvania acutelirata
  • †Alvania purpurea
• †Alveopora
  • †Alveopora chiapanecae – type locality for species
• †Amauropsis
  • †Amauropsis alveata – or unidentified comparable form
  • †Amauropsis martinezensis
  • †Amauropsis oviformis – or unidentified comparable form
  • †Amauropsis sp.
• †Amblypsilopus
  • †Amblypsilopus monicae – type locality for species
  • †Amblypsilopus sp.
• †Ambocythere
  • †Ambocythere elongata – or unidentified related form
  • †Ambocythere subreticulata
• †Ambracyptus – type locality for genus
  • †Ambracyptus minutissimus – type locality for species
• †Americardia
  • †Americardia media
• †Amiantis
  • †Amiantis callosa
  • †Amiantis communis – or unidentified related form
  • †Amiantis communis – or unidentified comparable form
• †Ammodochium
  • †Ammodochium rectangulare
• †Ammospermophilus – or unidentified comparable form
• †Ammospermophilus
  • †Ammospermophilus jeffriesi – type locality for species
  • †Ammospermophilus sp.
• †Amnestus
  • †Amnestus guapinolinus – type locality for species
• †Amphimachairodus
  • †Amphimachairodus coloradensis – or unidentified comparable form
  • †Amphimachairodus coloradensis
• †Amphissa
  • †Amphissa versicolor
• †Amphistegina
  • †Amphistegina parvula
  • †Amphistegina pregrimsdalei
  • †Amphistegina sp.
• †Amphithalamus
  • †Amphithalamus inclusus
  • †Amphithalamus tenuis
• †Ampullina
  • †Ampullina amphora
  • †Ampullina dumblei – tentative report
  • †Ampullina dumblei
  • †Ampullina mississippiensis
  • †Ampullina quitrinensis – tentative report
  • †Ampullina quitrinensis
  • †Ampullina vaughani
• †Amusium
  • †Amusium alazanum
  • †Amusium lompocensis
  • †Amusium lyoni
  • †Amusium mortoni
  • †Amusium pourtalesianum
  • †Amusium sp.
• †Amussiopecten
  • †Amussiopecten vanvlecki – or unidentified comparable form
• †Amydrocarcinus
  • †Amydrocarcinus dantei – type locality for species
  • †Amydrocarcinus dantei
  • †Amydrocarcinus tepetate
• †Amynodontopsis – or unidentified comparable form
  • †Amynodontopsis sp.
• †Anacaena
  • †Anacaena sp.
• †Anacardites
  • †Anacardites lanceolatus – type locality for species
• †Anachis
  • †Anachis mira
  • †Anachis sp.
• †Anadara
  • †Anadara actinophora
  • †Anadara arata
  • †Anadara formosa
  • †Anadara inutilis – or unidentified comparable form
  • †Anadara inutilis
  • †Anadara lienosa
  • †Anadara multicostata – or unidentified comparable form
  • †Anadara multicostata
  • †Anadara telemba
  • †Anadara topangensis
  • †Anadara trilineata
  • †Anadara tuberculosa
  • †Anadara veatchi – or unidentified comparable form
  • †Anadara woodringi
• †Anaphes
  • †Anaphes sp.
• †Anaplecta
  • †Anaplecta sp.
• †Anas
  • †Anas acuta
  • †Anas clypeata
  • †Anas discors
  • †Anas sp.
• †Anatolikos
  • †Anatolikos undecimspinosus
• †Anbarrhacus – type locality for genus
  • †Anbarrhacus adamantis – type locality for species
• †Ancilla
  • †Ancilla alazana
  • †Ancilla sp.
• †Ancillaria
  • †Ancillaria subglobosa – tentative report
• †Anguinella
  • †Anguinella virginica
• †Angulus
  • †Angulus buttoni
• †Anhinga
  • †Anhinga anhinga
• †Annulites – type locality for genus
  • †Annulites mexicana – type locality for species
• †Anolis
  • †Anolis electrum – type locality for species
• †Anomalocardia
  • †Anomalocardia subimbricata – or unidentified comparable form
• †Anomia
  • †Anomia inornata – or unidentified comparable form
  • †Anomia malinchae
  • †Anomia peruviana
  • †Anomia simplex
  • †Anomia sp. – tentative report
  • †Anomia sp.
  • †Anomia vaquerosensis
• †Anona
  • †Anona saraviana – type locality for species
• †Anser
  • †Anser sp.
• †Antalis
  • †Antalis mississippiense – tentative report
  • †Antalis mississippiense
  • †Antalis mississippiensis – tentative report
• †Antecalomys
  • †Antecalomys valensis
• †Anthonomus
  • †Anthonomus dilatofemurus – type locality for species
• †Antiguastrea
  • †Antiguastrea cellulosa
  • †Antiguastrea sp.
• †Antillia
  • †Antillia clarki
  • †Antillia heueri – type locality for species
• †Antillocyathus
  • †Antillocyathus maoensis
  • †Antillocyathus trinitatis
• †Antillophos
  • †Antillophos elegans
  • †Antillophos mexicanus
• †Antillopsyche
  • †Antillopsyche mexicana – type locality for species
• †Antilloseris
  • †Antilloseris cantabrigiensis
• †Antilocapra
  • †Antilocapra americana
• †Antropora
  • †Antropora tincta
• †Antrozous
  • †Antrozous pallidus
• †Aphaenogaster
  • †Aphaenogaster praerelicta – type locality for species
• †Apocynophyllum
  • †Apocynophyllum mexicanum – type locality for species
• †Aquila
  • †Aquila chrysaetos
• †Araneus
  • †Araneus exustus – type locality for species
• †Arca – tentative report
• †Arca
  • †Arca devincta – or unidentified related form
  • †Arca medioimpressa – or unidentified comparable form
  • †Arca mutabilis
  • †Arca osmonti – or unidentified comparable form
  • †Arca pacifica
  • †Arca sp.
  • †Arca spencer
• †Archaeolithothamnium – tentative report
• †Archaeolithothamnium
  • †Archaeolithothamnium sp.
• †Archaeotetra
  • †Archaeotetra inornata
• †Archipsocopsis
  • †Archipsocopsis antigua – type locality for species
  • †Archipsocopsis antigua
• †Archipsocus
  • †Archipsocus sp.
  • †Archipsocus sp. 1informal
  • †Archipsocus sp. 2informal
  • †Archipsocus sp. 3informal
• †Architectonica
  • †Architectonica alabamensis
  • †Architectonica alveatum
  • †Architectonica bajaensis
  • †Architectonica bieleri
  • †Architectonica cognata
  • †Architectonica josephi
  • †Architectonica nobilis
  • †Architectonica sp.
  • †Architectonica sp. 1informal
  • †Architectonica sp. 2informal
• †Arcinella
  • †Arcinella arcinella
  • †Arcinella sp.
• †Arcopsis
  • †Arcopsis solida
• †Arctocephalus
  • †Arctocephalus sp.
• †Arctodus
  • †Arctodus pristinus
  • †Arctodus sp.
• †Ardea
  • †Ardea alba
  • †Ardea herodias
• †Arene
  • †Arene mcleani
• †Argilloecia
  • †Argilloecia hiwanneensis
• †Argopecten – tentative report
• †Argopecten
  • †Argopecten abietis – or unidentified comparable form
  • †Argopecten abietis
  • †Argopecten callidus – or unidentified comparable form
  • †Argopecten callidus
  • †Argopecten cristobalensis – or unidentified comparable form
  • †Argopecten cristobalensis
  • †Argopecten deserti
  • †Argopecten diminutivus – type locality for species
  • †Argopecten diminutivus
  • †Argopecten evermanni – type locality for species
  • †Argopecten hakei – or unidentified comparable form
  • †Argopecten hakei
  • †Argopecten invalidus
  • †Argopecten mendenhalli – or unidentified related form
  • †Argopecten mendenhalli
  • †Argopecten percarus
  • †Argopecten purpuratus – or unidentified comparable form
  • †Argopecten revellei
  • †Argopecten sp.
  • †Argopecten subdolus
  • †Argopecten sverdrupi
  • †Argopecten thetidis
  • †Argopecten ventricosus
• †Arossia
  • †Arossia panamensis
• †Artibeus
  • †Artibeus jamaicensis
• †Assiminea
  • †Assiminea transluscens
• †Astarte
  • †Astarte opulentora
• †Asterosmilia
  • †Asterosmilia hilli
• †Astraea
  • †Astraea undosa
  • †Astraea unguis
• †Astrangia
  • †Astrangia conferta
  • †Astrangia haimei
  • †Astrangia sp.
• †Astreopora
  • †Astreopora esperanzae – type locality for species
  • †Astreopora esperanzae
  • †Astreopora spinulosum – type locality for species
• †Astrocoenia
  • †Astrocoenia dilloni
  • †Astrocoenia guantanamensis
  • †Astrocoenia portoricensis
• †Astrodapsis
  • †Astrodapsis israelskyi – type locality for species
  • †Astrodapsis kewi – type locality for species
• †Astrohippus – tentative report
• †Astrohippus
  • †Astrohippus ansae
  • †Astrohippus stockii – or unidentified comparable form
  • †Astrohippus stockii
• †Athleta
  • †Athleta clayi – tentative report
  • †Athleta corvocada
  • †Athleta crassitesta
  • †Athleta lapparoides
  • †Athleta minutus
  • †Athleta petrosa
  • †Athleta sp.informal
  • †Athleta symmetrica – tentative report
  • †Athleta symmetrica
  • †Athleta tuomeyi – tentative report
  • †Athleta tuomeyi
• †Atrina
  • †Atrina jacksoniana – tentative report
  • †Atrina serrata
  • †Atrina sp.
• †Attiliosa
  • †Attiliosa striata
• †Aturia
  • †Aturia alabamensis
  • †Aturia angustata
  • †Aturia myrlae
  • †Aturia sp.
• †Atys
  • †Atys sp.
• †Aurinia
  • †Aurinia dubia
• †Avicula
  • †Avicula sp.
• †Aythya
  • †Aythya affinis
  • †Aythya americana
  • †Aythya marila
  • †Aythya sp.
• †Azteca
  • †Azteca sp.
• †Baiomys
  • †Baiomys kolbi
• †Balaenoptera
  • †Balaenoptera sp.
• †Balanophyllia
  • †Balanophyllia caulifera – type locality for species
• †Balantiopteryx
  • †Balantiopteryx io
• †Balanus
  • †Balanus amphitite – or unidentified comparable form
  • †Balanus californicus – or unidentified related form
  • †Balanus eburneus
  • †Balanus gregarius
  • †Balanus improvisus
  • †Balanus nubilus – or unidentified comparable form
  • †Balanus sp.
  • †Balanus trigonus
• †Balcis
  • †Balcis conoidea
  • †Balcis rutila
  • †Balcis thersites
• †Barbatia
  • †Barbatia illota
  • †Barbatia ludoviciana – or unidentified comparable form
  • †Barbatia mauryae
  • †Barbatia reeveana
  • †Barbatia sp.
• †Barleeia
  • †Barleeia haliotiphila
  • †Barleeia oldroydi
  • †Barleeia subtenuis
• †Bassariscus
  • †Bassariscus astutus
  • †Bassariscus sp.
• †Batequeus – type locality for genus
• †Batequeus
  • †Batequeus mezquitalensis – type locality for species
  • †Batequeus mezquitalensis
• †Bathygenys
  • †Bathygenys alpha
• †Belaphotroctes
  • †Belaphotroctes ghesquierei – type locality for species
  • †Belaphotroctes sp.
• †Benoibates
  • †Benoibates chiapasensis – type locality for species
• †Bensonomys
  • †Bensonomys baskini
  • †Bensonomys elachys
  • †Bensonomys winklerorum – type locality for species
• †Bernaya
  • †Bernaya grovesi – type locality for species
  • †Bernaya media
  • †Bernaya obesa
• †Biddulphia
  • †Biddulphia aurita
• †Bignonoides – type locality for genus
  • †Bignonoides orbicularis – type locality for species
• †Bison
  • †Bison alaskensis
  • †Bison latifrons – or unidentified comparable form
  • †Bison latifrons
  • †Bison sp.
• †Bittium
  • †Bittium alternatum
  • †Bittium estellense
  • †Bittium interfossa
  • †Bittium purpureum
  • †Bittium sp.
• †Blancocamelus
  • †Blancocamelus meadei
• †Boletina
  • †Boletina sp. 1informal
  • †Boletina sp. 2informal
• †Bolis
  • †Bolis mexicana
• †Borophagus – tentative report
• †Borophagus
  • †Borophagus diversidens
  • †Borophagus hilli
  • †Borophagus secundus
  • †Borophagus sp.
• †Borsonia
  • †Borsonia aguilae
• †Brachidontes
  • †Brachidontes adamsianus
  • †Brachidontes mississippiensis
  • †Brachidontes semilaevis
• †Brachycythere
  • †Brachycythere sp.
• †Brachydeutera
  • †Brachydeutera sp.
• †Brachypogon
  • †Brachypogon sp.
• †Bradysia
  • †Bradysia sp.
• †Branta
  • †Branta canadensis
• †Bremia
  • †Bremia sp.
• †Brontops
  • †Brontops brachycephalus – or unidentified comparable form
• †Brunettia
  • †Brunettia hurdi – type locality for species
• †Bufo
  • †Bufo campi – type locality for species
  • †Bufo sp.
• †Buisnictis
  • †Buisnictis metabatos – type locality for species
• †Bulla
  • †Bulla aspersa
  • †Bulla gouldiana – or unidentified comparable form
  • †Bulla gouldiana
  • †Bulla punctulata
• †Buntonia
  • †Buntonia sp.
• †Bursa
  • †Bursa corrguata
  • †Bursa corrugata
  • †Bursa rugosa
• †Buteo – tentative report
  • †Buteo sp.
• †Byrsochernes – type locality for genus
  • †Byrsochernes maatiatus – type locality for species
• †Cadulus
  • †Cadulus aldrichi
  • †Cadulus jacksonensis – tentative report
  • †Cadulus sp.
• †Caecum
  • †Caecum anellifer
  • †Caecum californicum
  • †Caecum chipolanum
  • †Caecum cycloferum
  • †Caecum licalum
  • †Caecum mexicanum
  • †Caecum regulare
  • †Caecum sp.
  • †Caecum tomaculum
  • †Caecum veracruzanum
• †Caelopleurus
  • †Caelopleurus coronaformis
• †Caenolambda
  • †Caenolambda jepseni
• †Calamus
  • †Calamus sp.
• †Calappa
  • †Calappa flammea
  • †Calappa zurcheri
• †Calappilia
  • †Calappilia hondoensis
• †Calcaritermes
  • †Calcaritermes sp.
  • †Calcaritermes vetus – type locality for species
  • †Calcaritermes vetus
• †Caleschara
  • †Caleschara mexicana
• †Calidris
  • †Calidris fusicollis
• †Californiconus
  • †Californiconus californicus
• †Calippus
  • †Calippus hondurensis
  • †Calippus sp.
• †Calisiopsis
  • †Calisiopsis azteca – type locality for species
• †Callianassa
  • †Callianassa pellucida
  • †Callianassa pustulata
  • †Callianassa sp.
  • †Callianassa tepetatensis
• †Calliostoma
  • †Calliostoma doliarium
  • †Calliostoma eximum
  • †Calliostoma gemmulatum
  • †Calliostoma granulata
  • †Calliostoma hannibali – type locality for species
  • †Calliostoma hannibali
  • †Calliostoma kerri
  • †Calliostoma ligatum
  • †Calliostoma limonensis
  • †Calliostoma limulum
  • †Calliostoma pulcher
  • †Calliostoma sp.
  • †Calliostoma sp. 1informal
  • †Calliostoma sp. 2informal
• †Callistochiton
  • †Callistochiton crassicostatus
  • †Callistochiton palmulatus
• †Calloarca
  • †Calloarca alternata
  • †Calloarca taeniata
• †Callocardia
  • †Callocardia amichel
• †Callorhinus
  • †Callorhinus gilmorei
• †Calophos
  • †Calophos plicatilis
• †Calyptraea
  • †Calyptraea costellata
  • †Calyptraea excentricus
  • †Calyptraea inornata
  • †Calyptraea mamillaris
  • †Calyptraea mammillaris
  • †Calyptraea sp.
• †Calyptraphorus
  • †Calyptraphorus carrizensis
  • †Calyptraphorus popenoe – tentative report
  • †Calyptraphorus popenoe
  • †Calyptraphorus terrysmithae
  • †Calyptraphorus velatus
• †Camelops – type locality for genus
• †Camelops – or unidentified comparable form
• †Camelops
  • †Camelops hesternus – or unidentified comparable form
  • †Camelops hesternus
  • †Camelops sp. – type locality for species
  • †Camelops sp.
• †Campanile
  • †Campanile sp.
• †Camponotus
  • †Camponotus sp.
• †Cancellaria
  • †Cancellaria bajaensis
  • †Cancellaria centrota
  • †Cancellaria modesta – or unidentified comparable form
  • †Cancellaria paleocenica
  • †Cancellaria sp.
  • †Cancellaria sp. 1informal
  • †Cancellaria sp. 2informal
  • †Cancellaria tritonidea
• †Cancer
  • †Cancer productus
• †Candona
  • †Candona caudate
• †Caniformes
  • †Caniformes sp.
• †Canis
  • †Canis cedazoensis – type locality for species
  • †Canis dirus
  • †Canis edwardii
  • †Canis ferox – type locality for species
  • †Canis ferox – or unidentified comparable form
  • †Canis ferox
  • †Canis latrans
  • †Canis lepophagus
  • †Canis sp.
• †Cannopilus
  • †Cannopilus hemisphaericus
  • †Cannopilus sphaericus
• †Cantharus
  • †Cantharus gemmatus
  • †Cantharus sanguinolentus
• †Capromeryx – or unidentified comparable form
• †Capromeryx
  • †Capromeryx minor – or unidentified comparable form
  • †Capromeryx minor
  • †Capromeryx sp.
  • †Capromeryx tauntonensis
• †Caracara
  • †Caracara cheriway
• †Caranx – or unidentified comparable form
  • †Caranx sp.
• †Carcaradon
  • †Carcaradon sulcidens
• †Carcharadon
  • †Carcharadon sulcidens
• †Carcharhinus – tentative report
• †Carcharhinus
  • †Carcharhinus albimarginatus
  • †Carcharhinus altimus
  • †Carcharhinus antiquus
  • †Carcharhinus brachylurus
  • †Carcharhinus brachyurus
  • †Carcharhinus falciformis
  • †Carcharhinus galapagensis
  • †Carcharhinus leucas
  • †Carcharhinus limbatus
  • †Carcharhinus obscurus
  • †Carcharhinus sp.
  • †Carcharhinus velox
• †Carcharias
  • †Carcharias sp.
• †Carcharinus
  • †Carcharinus leucas
• †Carcharodon
  • †Carcharodon arnoldi
  • †Carcharodon auriculatus
  • †Carcharodon carcharias – or unidentified comparable form
  • †Carcharodon carcharias
  • †Carcharodon hastalis
  • †Carcharodon sp.
  • †Carcharodon sulcidens
• †Carcinoplax – tentative report
  • †Carcinoplax sp.
• †Cardiomya
  • †Cardiomya vieja
• †Carditamera
  • †Carditamera affinis
• †Cardites
  • †Cardites crassicostata
• †Cardium
  • †Cardium sp.
• †Carinodrillia
  • †Carinodrillia pylonia – or unidentified comparable form
• †Caryocorbula
  • †Caryocorbula biradiata
  • †Caryocorbula conradi – tentative report
  • †Caryocorbula conradi
  • †Caryocorbula engonatoides
  • †Caryocorbula marmorata
  • †Caryocorbula nasuta
  • †Caryocorbula prenasuta
  • †Caryocorbula quirosana – or unidentified comparable form
• †Cassis
  • †Cassis abbreviatus – or unidentified comparable form
• †Castor
  • †Castor californicus – or unidentified comparable form
• †Catagonus
  • †Catagonus sp.
• †Caulophilus
  • †Caulophilus ayotzinapa – type locality for species
• †Cavilinga
  • †Cavilinga lampra
  • †Cavilinga prolongata
• †Cedrela
  • †Cedrela miocenica – type locality for species
• †Cedusa
  • †Cedusa baylissae – type locality for species
• †Cellana
  • †Cellana sp.
• †Celleporaria
  • †Celleporaria sp.
• †Celliforma
  • †Celliforma curvata
• †Celtis
  • †Celtis sp.
• †Cenanges – tentative report
  • †Cenanges sp. 1informal
  • †Cenanges sp. 2informal
• †Cenocephalus
  • †Cenocephalus hurdi – type locality for species
  • †Cenocephalus hurdi
  • †Cenocephalus quadrilobus – type locality for species
  • †Cenocephalus succinicaptus
  • †Cenocephalus tenuis – type locality for species
• †Centruroides – tentative report
  • †Centruroides sp.
• †Cephalotes
  • †Cephalotes maya – type locality for species
  • †Cephalotes olmecus – type locality for species
  • †Cephalotes poinari – type locality for species
  • †Cephalotes sp. 1informal
  • †Cephalotes sp. 2informal
  • †Cephalotes ventriosus – type locality for species
• †Cerastoderma
  • †Cerastoderma carlotae
• †Ceratocombus
  • †Ceratocombus hurdi – type locality for species
• †Ceratostoma
  • †Ceratostoma nuttalli
  • †Ceratostoma pecki – type locality for species
  • †Ceratostoma pecki
• †Cerdocyon
  • †Cerdocyon avius – tentative report
  • †Cerdocyon avius
• †Cerithidea
  • †Cerithidea californica
  • †Cerithidea mazatlanica
  • †Cerithidea sp.
• †Cerithiopsis
  • †Cerithiopsis antefilosa
  • †Cerithiopsis antemunda – or unidentified comparable form
  • †Cerithiopsis carpenteri
  • †Cerithiopsis diegensis
  • †Cerithiopsis sp.
  • †Cerithiopsis vinca
• †Cerithium – tentative report
• †Cerithium – report made of unidentified related form or using admittedly obsolete nomenclature
• †Cerithium
  • †Cerithium alejandroi
  • †Cerithium caloosaense
  • †Cerithium hillsboroense
  • †Cerithium maculosum
  • †Cerithium mendezense
  • †Cerithium revillense
  • †Cerithium sp.
  • †Cerithium stercomuscarum
• †Cernina
  • †Cernina hannibali
• †Cerorhinca
  • †Cerorhinca minor – type locality for species
  • †Cerorhinca minor
• †Cetorhinus
  • †Cetorhinus sp.
• †Chaetodipus
  • †Chaetodipus hispidus
• †Chaetodromia
  • †Chaetodromia pulchra – type locality for species
• †Chagrepecten
  • †Chagrepecten cactaceus
  • †Chagrepecten dallasi
• †Chama
  • †Chama arcana
  • †Chama frondosa
  • †Chama janus
  • †Chama sp.
  • †Chama squamuligera
• †Chamelea
  • †Chamelea matulina – tentative report
  • †Chamelea matulina
  • †Chamelea matutina
• †Chara
  • †Chara sp.
• †Charonia – tentative report
  • †Charonia sp.
• †Chasmaporthetes
  • †Chasmaporthetes ossifragus
• †Cheilea
  • †Cheilea equestris
• †Chemnitzia
  • †Chemnitzia atlasi
  • †Chemnitzia sp.
• †Chiapasona – type locality for genus
  • †Chiapasona defuncta – type locality for species
• †Chicoreus
  • †Chicoreus articulatus
  • †Chicoreus brevifrons
  • †Chicoreus dilectus
  • †Chicoreus enigmaticus
  • †Chicoreus miltos – type locality for species
• †Chione
  • †Chione californiensis – or unidentified comparable form
  • †Chione californiensis
  • †Chione ebergengyii
  • †Chione elesmerensis
  • †Chione kanakoffi
  • †Chione richtofeni – type locality for species
  • †Chione securis – or unidentified comparable form
  • †Chione sp.
  • †Chione subrugosa – or unidentified comparable form
  • †Chione tumens
  • †Chione undatella – tentative report
  • †Chione undatella
• †Chioneryx
  • †Chioneryx squamosa
• †Chionista
  • †Chionista fluctifraga
• †Chionopsis
  • †Chionopsis gnidia
  • †Chionopsis propinqua – or unidentified comparable form
  • †Chionopsis propinqua
  • †Chionopsis pullcaria
  • †Chionopsis richthofeni
  • †Chionopsis sp.
  • †Chionopsis temblorensis – or unidentified related form
  • †Chionopsis temblorensis
• †Chlamys
  • †Chlamys burlesonensis – tentative report
  • †Chlamys corteziana
  • †Chlamys hastata
  • †Chlamys mediacostatus
  • †Chlamys opuntia
  • †Chlamys parmeleei
  • †Chlamys swifti
• †Chlorostoma
  • †Chlorostoma gallina – or unidentified comparable form
  • †Chlorostoma gallina
  • †Chlorostoma rugosa
  • †Chlorostoma sp.
• †Chonecetus – tentative report
  • †Chonecetus sp.
• †Chrysodomus
  • †Chrysodomus sp.
• †Chrysotus
  • †Chrysotus sp.
• †Cibicides
  • †Cibicides fletcheri
• †Cimomia
  • †Cimomia haltomi
  • †Cimomia vaughani – or unidentified comparable form
• †Circus
  • †Circus cyaneus
• †Cirsotrema – tentative report
• †Cirsotrema
  • †Cirsotrema cortezi – tentative report
  • †Cirsotrema cortezi
  • †Cirsotrema sp.
• †Cladocora
  • †Cladocora bosquensis – type locality for species
  • †Cladocora bosquensis
  • †Cladocora sp.
• †Claibornites
  • †Claibornites diegoensis – or unidentified comparable form
• †Clathrodrillia
  • †Clathrodrillia incisa
• †Clavilithes
  • †Clavilithes tabulatus
• †Clavus
  • †Clavus empyrosia – or unidentified comparable form
  • †Clavus hemphilli
  • †Clavus inaudita
  • †Clavus oerteli
  • †Clavus urbinai
• †Clementia – tentative report
• †Clementia
  • †Clementia conradiana – or unidentified comparable form
  • †Clementia dariena
  • †Clementia grayi – tentative report
  • †Clementia grayi – or unidentified comparable form
  • †Clementia sp.
• †Clinocardium
  • †Clinocardium meekianum – or unidentified related form
• †Clinodiplosis
  • †Clinodiplosis terrestris – or unidentified related form
• †Clithon
  • †Clithon luteofasciatus
• †Clithrocytheridea
  • †Clithrocytheridea caldwellensis
  • †Clithrocytheridea grigsbyi
  • †Clithrocytheridea sp. 1informal
  • †Clithrocytheridea sp. 2informal
• †Cloeodes
  • †Cloeodes sp.
• †Clypeasler
  • †Clypeasler carrizoensis – or unidentified comparable form
• †Clypeaster
  • †Clypeaster bowersi
  • †Clypeaster deserti
  • †Clypeaster sp.
• †Cnemidophorus
  • †Cnemidophorus gularis
• †Cochlespira
  • †Cochlespira cedonulli – or unidentified comparable form
  • †Cochlespira miranda
• †Codakia
  • †Codakia distinguenda – tentative report
  • †Codakia distinguenda
• †Collonista – tentative report
  • †Collonista sp.
• †Colpophyllia
  • †Colpophyllia mexicanum – type locality for species
  • †Colpophyllia mexicanum
  • †Colpophyllia natans
  • †Colpophyllia nicholasi – type locality for species
  • †Colpophyllia sp.
  • †Colpophyllia willoughbiensis
• †Columbella
  • †Columbella aureomexicana
  • †Columbella sp.
• †Colymbus
  • †Colymbus nigricollis
• †Comocladia
  • †Comocladia intermedia – type locality for species
• †Conasprelloides
  • †Conasprelloides multiliratus
• †Concavus
  • †Concavus concavus – or unidentified comparable form
  • †Concavus concavus
• †Conchocele
  • †Conchocele bisecta
• †Conepatus
  • †Conepatus leuconotus
  • †Conepatus sanmiguelensis – type locality for species
  • †Conepatus sanmiguelensis
• †Connarus
  • †Connarus carmenensis – type locality for species
• †Conopeum
  • †Conopeum commensale
• †Constrictor – or unidentified comparable form
  • †Constrictor sp.
• †Contarinia
  • †Contarinia sp.
• †Conus
  • †Conus aemulator
  • †Conus agassizi
  • †Conus almagrensis
  • †Conus angosturis – or unidentified comparable form
  • †Conus boggsi – or unidentified comparable form
  • †Conus boggsi
  • †Conus brunneus – or unidentified comparable form
  • †Conus brunneus
  • †Conus burckhardti
  • †Conus cacuminatus
  • †Conus caleocius
  • †Conus consobrinus
  • †Conus fergusoni
  • †Conus gladiator
  • †Conus imitator
  • †Conus jaspideus – or unidentified comparable form
  • †Conus lucidus
  • †Conus mahogani
  • †Conus nux
  • †Conus perplexus
  • †Conus princeps
  • †Conus protractus – tentative report
  • †Conus puncticulatus
  • †Conus purpurascens
  • †Conus recurvus
  • †Conus regularis – tentative report
  • †Conus regularis – or unidentified related form
  • †Conus regularis – or unidentified comparable form
  • †Conus regularis
  • †Conus sauridens
  • †Conus sp.
  • †Conus spurius – or unidentified comparable form
• †Copallinges – type locality for genus
  • †Copallinges chiapasensis – type locality for species
• †Copelatus
  • †Copelatus sp.
• †Coptotermes
  • †Coptotermes sp.
  • †Coptotermes sucineus – type locality for species
  • †Coptotermes sucineus
• †Coralliophila
  • †Coralliophila miocenica
• †Corbisema
  • †Corbisema triacantha
• †Corbula – tentative report
• †Corbula
  • †Corbula azucar
  • †Corbula carli
  • †Corbula carlotae
  • †Corbula engonata
  • †Corbula heterogena
  • †Corbula laqueata – tentative report
  • †Corbula lavalleana – or unidentified comparable form
  • †Corbula olssoni
  • †Corbula sp.
  • †Corbula texana – tentative report
• †Cormohipparion
  • †Cormohipparion quinni – or unidentified related form
• †Cornulina – tentative report
• †Cornulina
  • †Cornulina armigera
  • †Cornulina lita
  • †Cornulina sp.
• †Cornwallius – or unidentified related form
• †Cornwallius
  • †Cornwallius sookensis
  • †Cornwallius sp.
• †Corystosiren – type locality for genus
  • †Corystosiren varguezi – type locality for species
• †Coscinaraea
  • †Coscinaraea colei – type locality for species
• †Coscinodiscus
  • †Coscinodiscus curvatulus
  • †Coscinodiscus excentricus
  • †Coscinodiscus marginatus
  • †Coscinodiscus oculusiridis
• †Cosoryx – or unidentified comparable form
• †Cosoryx
  • †Cosoryx sp.
• †Coussapoa
  • †Coussapoa veracruziana – type locality for species
• †Crassadoma
  • †Crassadoma gigantea
• †Crassatella
  • †Crassatella antestriatus
  • †Crassatella branneri – or unidentified related form
  • †Crassatella sp.
  • †Crassatella texanus – tentative report
• †Crassinella
  • †Crassinella santarosaensis
  • †Crassinella sp.
  • †Crassinella varians – or unidentified comparable form
• †Crassispira
  • †Crassispira starri – type locality for species
  • †Crassispira starri
• †Crassitella
  • †Crassitella sp.
• †Crassostrea
  • †Crassostrea columbiensis
  • †Crassostrea contracta
  • †Crassostrea corteziensis – or unidentified comparable form
  • †Crassostrea titan
  • †Crassostrea virginica
• †Cratogeomys
  • †Cratogeomys castanops – or unidentified comparable form
  • †Cratogeomys castanops
  • †Cratogeomys merriami
• †Crematogaster
  • †Crematogaster sp.
• †Crenella
  • †Crenella diuturna
• †Crepidula – tentative report
• †Crepidula
  • †Crepidula adunca
  • †Crepidula arenata – or unidentified comparable form
  • †Crepidula coei
  • †Crepidula lingulata
  • †Crepidula nivea
  • †Crepidula norrisianum
  • †Crepidula nummaria
  • †Crepidula onyx
  • †Crepidula princeps
  • †Crepidula sp.
  • †Crepidula striolata
• †Crepipatella
  • †Crepipatella lingulata
• †Crepitacella
  • †Crepitacella cepula
• †Crescentia
  • †Crescentia cucurbitinoides – type locality for species
• †Crocodylus – or unidentified comparable form
• †Crocodylus
  • †Crocodylus acutus
  • †Crocodylus sp.
• †Crommium
  • †Crommium globosa
  • †Crommium perovatum – or unidentified comparable form
• †Crossata
  • †Crossata ventricosa
• †Crotalus – or unidentified comparable form
  • †Crotalus sp.
• †Crucibulum
  • †Crucibulum chipolanum
  • †Crucibulum imbricatum
  • †Crucibulum scutellatum
  • †Crucibulum sp.
  • †Crucibulum spinosum
• †Cryptochiton
  • †Cryptochiton stelleri
• †Cryptomya
  • †Cryptomya californica
• †Cryptopygus
  • †Cryptopygus sp.
• †Cryptorama
  • †Cryptorama sp.
• †Cryptorhopalum
  • †Cryptorhopalum electron – type locality for species
• †Cryptorhynchus – or unidentified related form
• †Cryptorhynchus
  • †Cryptorhynchus sp. 1informal
  • †Cryptorhynchus sp. 2informal
• †Cryptotis
  • †Cryptotis parva
• †Ctena
  • †Ctena mexicana
• †Ctenocardia
  • †Ctenocardia biangulata
• †Ctenocheles
  • †Ctenocheles sp.
• †Cubitostrea
  • †Cubitostrea lisbonensis
  • †Cubitostrea mezquitalensis – type locality for species
  • †Cubitostrea mezquitalensis
  • †Cubitostrea rugifera
  • †Cubitostrea sellaeformis
• †Cucullaea
  • †Cucullaea mathewsoni
  • †Cucullaea mathewsonii
• †Culicoides
  • †Culicoides sp.
• †Culiseta
  • †Culiseta sp.
• †Culoptila
  • †Culoptila aguilerai – type locality for species
• †Cumingia
  • †Cumingia californica
• †Cuon
  • †Cuon alpinus
• †Cushmanidea
  • †Cushmanidea ashermani
• †Cuvieronius
  • †Cuvieronius sp.
  • †Cuvieronius tropicus – type locality for species
  • †Cuvieronius tropicus
• †Cyathoseris
  • †Cyathoseris allisoni – type locality for species
• †Cyclichna
  • †Cyclichna sp.
• †Cyclinella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Cyclinella
  • †Cyclinella beteyensis – or unidentified comparable form
  • †Cyclinella cyclica
• †Cyclocardia
  • †Cyclocardia californica – or unidentified comparable form
  • †Cyclocardia ventricosa
• †Cyclostremiscus
  • †Cyclostremiscus bartschi
  • †Cyclostremiscus domingensis
  • †Cyclostremiscus guppyi
  • †Cyclostremiscus pentagonus
  • †Cyclostremiscus petiti
• †Cylichna
  • †Cylichna sp.
• †Cymatosyrinx
  • †Cymatosyrinx hemphilli
• †Cymia
  • †Cymia heimi – type locality for species
  • †Cymia heimi
  • †Cymia michoacanensis
  • †Cymia sp.
• †Cynomys
  • †Cynomys sp.
• †Cyphomyrmex
  • †Cyphomyrmex maya – type locality for species
• †Cypraea
  • †Cypraea sp.
• †Cypraecassis
  • †Cypraecassis coarctata
  • †Cypraecassis wilmae
• †Cypraedia
  • †Cypraedia girauxi – or unidentified comparable form
• †Cypraeolina
  • †Cypraeolina pyriformis
• †Cypraeorbis
  • †Cypraeorbis alabamensis
  • †Cypraeorbis sp.
• †Cypridopsis
  • †Cypridopsis vidua
• †Cystiscus
  • †Cystiscus jewetti
  • †Cystiscus regularis
  • †Cystiscus subtrigona
• †Cythara
  • †Cythara interlirata
• †Cytherea
  • †Cytherea hornii – or unidentified related form
• †Cythereis – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Cythereis hysonensis
• †Cytherella
  • †Cytherella hannai
• †Cytherelloidea
  • †Cytherelloidea danvillensis – or unidentified related form
  • †Cytherelloidea sp.
• †Cytheretta
  • †Cytheretta sp.
• †Cytheromorpha
  • †Cytheromorpha sp.
• †Cytheropteron
  • †Cytheropteron mexicanum – type locality for species
  • †Cytheropteron mexicanum
  • †Cytheropteron sp.
• †Cytherura
  • †Cytherura sp.
• †Daldorfia
  • †Daldorfia salina
• †Dalium
  • †Dalium dalli
• †Dallium
  • †Dallium dalli
• †Dallocardia
  • †Dallocardia quadragenarium – or unidentified comparable form
  • †Dallocardia quadragenarium
• †Dardanus
  • †Dardanus mexicanus – or unidentified comparable form
  • †Dardanus mexicanus
• †Darwinula
  • †Darwinula sp.
• †Dasyatis
  • †Dasyatis sp.
• †Dasyatus
  • †Dasyatus sp.
• †Dasyhelea
  • †Dasyhelea sp.
• †Delphinodon
  • †Delphinodon sp.
• †Dendostrea
  • †Dendostrea angermanni – type locality for species
  • †Dendostrea vespertina – or unidentified comparable form
  • †Dendostrea vespertina
• †Dendraster
  • †Dendraster cedrosensis
  • †Dendraster diegoensis
  • †Dendraster excentricus
  • †Dendraster gibbsii – or unidentified related form
  • †Dendraster gibbsii
  • †Dendraster hesperis – or unidentified comparable form
  • †Dendraster pacificus
  • †Dendraster pentagonalis
• †Dendrogyra
  • †Dendrogyra cylindrus
• †Dendropoma
  • †Dendropoma lituella
• †Denebola – type locality for genus
  • †Denebola brachycephala – type locality for species
• †Dentalium
  • †Dentalium alazanum
  • †Dentalium cooperi
  • †Dentalium cooperii
  • †Dentalium neohexagonum
  • †Dentalium ovale
  • †Dentalium praecursor
  • †Dentalium rimosum
  • †Dentalium sp.
  • †Dentalium stentor
• †Desmathyus
  • †Desmathyus brachydontus
• †Desmostylus – or unidentified related form
• †Desmostylus
  • †Desmostylus hesperus
  • †Desmostylus sp.
• †Diacodexis
  • †Diacodexis gracilis – or unidentified comparable form
• †Diacrita
  • †Diacrita sp.
• †Dibelodon
  • †Dibelodon praecursor – or unidentified comparable form
  • †Dibelodon praecursor
  • †Dibelodon shepardi
• †Dichocoenia
  • †Dichocoenia stokesi
• †Dicranomyia
  • †Dicranomyia alexbrowni – type locality for species
  • †Dicranomyia chiapa – type locality for species
  • †Dicranomyia mexa – type locality for species
  • †Dicranomyia sp.informal
  • †Dicranomyia sp.
  • †Dicranomyia vella – type locality for species
• †Dicromantispa
  • †Dicromantispa electromexicana – type locality for species
• †Dictyocha
  • †Dictyocha fibula
• †Didelphis
  • †Didelphis marsupialis
• †Didianema – tentative report
  • †Didianema sp.
• †Dinocardium
  • †Dinocardium bakeri
  • †Dinocardium cabezai – tentative report
  • †Dinocardium cabezai
• †Dinohippus – tentative report
• †Dinohippus
  • †Dinohippus interpolatus
  • †Dinohippus mexicanus – type locality for species
  • †Dinohippus mexicanus
  • †Dinohippus sp.
• †Dioclea – tentative report
  • †Dioclea mexicana – type locality for species
• †Diodons
  • †Diodons sp.
• †Diodora
  • †Diodora aspera
  • †Diodora cayenensis – or unidentified comparable form
  • †Diodora inaequalis
• †Diomedea
  • †Diomedea sp.
• †Dioplotherium
  • †Dioplotherium allisoni
  • †Dioplotherium sp.
• †Diploastrea
  • †Diploastrea crassolamellata
  • †Diploastrea sp.
• †Diplochaetetes
  • †Diplochaetetes mexicanus
• †Diplodonta
  • †Diplodonta orbella
  • †Diplodonta sericata
  • †Diplodonta sp.
• †Diploneis
  • †Diploneis taschenbergeri
• †Diploria
  • †Diploria dumblei – type locality for species
  • †Diploria labyrinthiformis
• †Dipodomys
  • †Dipodomys sp.
• †Discothyrea
  • †Discothyrea maya – type locality for species
• †Dissacus
  • †Dissacus sp.
• †Distephanus
  • †Distephanus crux
  • †Distephanus speculum
• †Distorsio
  • †Distorsio clathrata
  • †Distorsio constricta
  • †Distorsio decussata
  • †Distorsio mcgintyi
  • †Distorsio sp.
• †Divalinga – tentative report
• †Divalinga
  • †Divalinga eburnea
  • †Divalinga quadrisulcata
  • †Divalinga sp.
• †Divisulcus – type locality for genus
  • †Divisulcus demerei – type locality for species
• †Dolichorhinotermes
  • †Dolichorhinotermes apopnus – type locality for species
• †Donax
  • †Donax gouldii
  • †Donax gracilis
  • †Donax navicula
  • †Donax sp.
• †Dosinia
  • †Dosinia acetabulum
  • †Dosinia dunkeri – or unidentified comparable form
  • †Dosinia dunkeri
  • †Dosinia ponderosa
  • †Dosinia sp.
• †Dosinidia
  • †Dosinidia elegans
• †Drapetis
  • †Drapetis dissentis – type locality for species
• †Drepanura
  • †Drepanura sp.
• †Dryinus
  • †Dryinus palaeomexicanus – type locality for species
• †Drypetes
  • †Drypetes elliptica – type locality for species
• †Dusignathus
  • †Dusignathus santacruzensis
• †Dusisiren
  • †Dusisiren reinharti – type locality for species
• †Dyocibicides
  • †Dyocibicides biserialis
• †Ebriopsis
  • †Ebriopsis antiqua
• †Echinocythereis
  • †Echinocythereis mcguirti
• †Echinolampas
  • †Echinolampas sp. – tentative report
• †Echinometra
  • †Echinometra sp.
• †Ecphylus
  • †Ecphylus oculatus – type locality for species
• †Ectocion
  • †Ectocion ignotum – type locality for species
• †Ectopsocus
  • †Ectopsocus sp.
• †Elasmostoma
  • †Elasmostoma bajaensis – type locality for species
  • †Elasmostoma bajaensis
• †Electribius
  • †Electribius palaeomexicanus – type locality for species
• †Electrophrynus – type locality for genus
  • †Electrophrynus mirus – type locality for species
• †Elektrothopomyia
  • †Elektrothopomyia saltensis – type locality for species
  • †Elektrothopomyia tzoltzili – type locality for species
• †Elimia
  • †Elimia trigemmata – or unidentified comparable form
• †Elphidium
  • †Elphidium nassauensis
• †Empicoris
  • †Empicoris electricus – type locality for species
• †Encope
  • †Encope arcensis – type locality for species
  • †Encope arcensis
  • †Encope californica
  • †Encope chaneyi – type locality for species
  • †Encope granids
  • †Encope loretoensis – type locality for species
  • †Encope loretoensis
  • †Encope scrippsae – tentative report
  • †Encope sp.
  • †Encope sverdrupe
  • †Encope sverdrupi
  • †Encope tatetlaensis
  • †Encope tenuis – or unidentified related form
  • †Encope tenuis
• †Enoploclytia
  • †Enoploclytia sp.
• †Entomobrya
  • †Entomobrya decora – tentative report
  • †Entomobrya litigiosa – tentative report
  • †Entomobrya sp.
  • †Entomobrya trifasciata – tentative report
• †Eocithara
  • †Eocithara sp.
• †Eocypraea
  • †Eocypraea castacensis – or unidentified comparable form
  • †Eocypraea inflata
  • †Eocypraea novasumma
  • †Eocypraea sp. – tentative report
  • †Eocypraea sp.
• †Eofabiania
  • †Eofabiania cushamani
• †Eohippus
  • †Eohippus angustidens – or unidentified comparable form
• †Eohomopterus
  • †Eohomopterus simojovelensis – type locality for species
• †Eomysmena
  • †Eomysmena asta – type locality for species
• †Eopapyrina
  • †Eopapyrina darienensis
• †Eopustularia
  • †Eopustularia acyensis
  • †Eopustularia subrostrata
• †Epicauta
  • †Epicauta sanctoruensis – type locality for species
• †Epicyon
  • †Epicyon saevus
• †Epilucina
  • †Epilucina californica
• †Episinus
  • †Episinus chiapasanus – type locality for species
  • †Episinus penneyi – type locality for species
• †Epitonium
  • †Epitonium cedrosensis – type locality for species
  • †Epitonium cedrosensis
  • †Epitonium contrerasi – type locality for species
  • †Epitonium dallasi – type locality for species
  • †Epitonium dupliniana
  • †Epitonium foliaceicostum
  • †Epitonium indianorum
  • †Epitonium sp. – type locality for species
  • †Epitonium sp.
  • †Epitonium tinctum
• †Equus
  • †Equus complicatus – or unidentified related form
  • †Equus conversidens – type locality for species
  • †Equus conversidens – or unidentified comparable form
  • †Equus conversidens
  • †Equus crenidens – type locality for species
  • †Equus crenidens
  • †Equus excelsus
  • †Equus mexicanus
  • †Equus simplicidens – tentative report
  • †Equus simplicidens – or unidentified comparable form
  • †Equus simplicidens
  • †Equus sp.
• †Erato
  • †Erato sp.
• †Erethizon
  • †Erethizon dorsatum – tentative report
  • †Erethizon dorsatum
• †Erioptera
  • †Erioptera beata – type locality for species
  • †Erioptera divera – type locality for species
  • †Erioptera sherry – type locality for species
• †Eriosachila
  • †Eriosachila bajaensis – type locality for species
  • †Eriosachila bajaensis
  • †Eriosachila bajensis
  • †Eriosachila sp.
• †Eriphia
  • †Eriphia squamata
• †Erosaria
  • †Erosaria aliena – or unidentified comparable form
  • †Erosaria cernica
• †Esteslestes
  • †Esteslestes ensis – type locality for species
• †Esthonyx – or unidentified comparable form
  • †Esthonyx sp.
• †Eucanyra
  • †Eucanyra sp.
• †Euceratherium
  • †Euceratherium sp.
• †Eucidaris
  • †Eucidaris thouarsi
• †Euclia
  • †Euclia cassidiformis
• †Eucrassatella
  • †Eucrassatella venezuelana – or unidentified comparable form
• †Eucyon
  • †Eucyon davisi
• †Eugnamptus
  • †Eugnamptus proterus – type locality for species
• †Eulaema
  • †Eulaema zigrasi – type locality for species
• †Eumetopias
  • †Eumetopias sp.
• †Eumops
  • †Eumops perotis
• †Euparius
  • †Euparius elongatus – type locality for species
• †Eupatagus
  • †Eupatagus batequensis – type locality for species
• †Euperlida – type locality for genus
  • †Euperlida parvicercifera – type locality for species
• †Euphagus
  • †Euphagus cyanocephalus
• †Eupleura
  • †Eupleura engerrabunda
  • †Eupleura triquetra
• †Eurytellina
  • †Eurytellina browni
  • †Eurytellina mooreana – tentative report
  • †Eurytellina mooreana
  • †Eurytellina simulans
• †Eurytium
  • †Eurytium sp.
• †Eusmilia
  • †Eusmilia fastigiata
• †Euspatangus
  • †Euspatangus antillarium
• †Euspira
  • †Euspira heros
  • †Euspira hotsoni – or unidentified comparable form
  • †Euspira lewisii
• †Euthynnus
  • †Euthynnus sp.
• †Euvola
  • †Euvola bowdenensis
  • †Euvola keepi – or unidentified related form
  • †Euvola keepi
  • †Euvola vogdesi – or unidentified comparable form
  • †Euvola vogdesi
• †Exilia
  • †Exilia sp.
• †Fabiania
  • †Fabiania cubensis
• †Fagara
  • †Fagara wadii – type locality for species
• †Falsifusus
  • †Falsifusus carexus
  • †Falsifusus mortoniopsis
• †Fartulum
  • †Fartulum hemphilli
  • †Fartulum occidentale
  • †Fartulum orcutti
• †Fasciolaria
  • †Fasciolaria semistriata
• †Favartia
  • †Favartia lappa – or unidentified comparable form
• †Favia
  • †Favia dominicensis
  • †Favia fragum
• †Favites
  • †Favites mexicana – type locality for species
  • †Favites polygonalis
• †Felis
  • †Felis lacustris
• †Fictotama – type locality for genus
  • †Fictotama extincta – type locality for species
• †Fictovichnus
  • †Fictovichnus sciuttoi
• †Ficus
  • †Ficus carbasea
  • †Ficus communis
  • †Ficus mississippiensis
  • †Ficus sp.
  • †Ficus talamancana – type locality for species
  • †Ficus ventricosa
  • †Ficus ventricosus – or unidentified comparable form
• †Fimbria
  • †Fimbria pacifica – type locality for species
• †Fissurella
  • †Fissurella mexicana
  • †Fissurella sp.
  • †Fissurella volcano
• †Flabellipecten
  • †Flabellipecten carrizoensis
  • †Flabellipecten refugioensis
  • †Flabellipecten stearnsii
• †Flabellum
  • †Flabellum sp.
• †Floresomys
  • †Floresomys guanajuatoensis – type locality for species
• †Forcipomyia
  • †Forcipomyia sp.informal
  • †Forcipomyia sp.
• †Forelius
  • †Forelius sp.
• †Forreria
  • †Forreria belcheri
  • †Forreria sp.
  • †Forreria wrighti – type locality for species
• †Fulica
  • †Fulica americana – or unidentified comparable form
  • †Fulica americana
• †Fusimitra
  • †Fusimitra conquisita
  • †Fusimitra conquista
  • †Fusimitra millingtoni
• †Fusinus
  • †Fusinus cinereus
  • †Fusinus luteopictus
  • †Fusinus sp.
• †Gadila
  • †Gadila aldrichi – tentative report
  • †Gadila aldrichi
• †Galeocerdo
  • †Galeocerdo aduncus
  • †Galeocerdo rosaliaensis
  • †Galeocerdo rosaliensis
  • †Galeocerdo sp.
• †Galeodea
  • †Galeodea koureos – tentative report
  • †Galeodea koureos
  • †Galeodea planotecta – tentative report
  • †Galeodea sp.
• †Galeorhinus – or unidentified comparable form
  • †Galeorhinus sp.
• †Galodea
  • †Galodea sp.
• †Gardineria
  • †Gardineria simojovelensis – type locality for species
• †Gardineroseris
  • †Gardineroseris planulata
• †Gari
  • †Gari hornii – or unidentified comparable form
• †Gavelinopsis
  • †Gavelinopsis turbinata
• †Gemmula
  • †Gemmula alazana
  • †Gemmula mexa
• †Geochelone
  • †Geochelone sp.
• †Geomys
  • †Geomys carranzai
  • †Geomys minor
• †Geratozygops
  • †Geratozygops durhami – type locality for species
• †Gibberula
  • †Gibberula glandula
• †Ginglymostoma
  • †Ginglymostoma sp.
• †Glans
  • †Glans carpenteri
• †Globigerinoides
  • †Globigerinoides sacculifer
• †Globocuadrina
  • †Globocuadrina altispira
  • †Globocuadrina globosa
• †Globoquadrina
  • †Globoquadrina venezuelana – tentative report
• †Globorotalia
  • †Globorotalia obesa
• †Glossotherium – or unidentified comparable form
• †Glossotherium
  • †Glossotherium garbanii
  • †Glossotherium sp.
• †Glycymeris
  • †Glycymeris gigantea
  • †Glycymeris inaequalis
  • †Glycymeris maculata – or unidentified comparable form
  • †Glycymeris sagittata
  • †Glycymeris septentrionalis – tentative report
  • †Glycymeris septentrionalis – or unidentified related form
  • †Glycymeris septentrionalis
  • †Glycymeris sp.
  • †Glycymeris swartsi – type locality for species
  • †Glycymeris swartsi
  • †Glycymeris veatchii – or unidentified related form
  • †Glycymeris veatchii
• †Glyphonyx
  • †Glyphonyx chiapasensis – type locality for species
  • †Glyphonyx punctatus – type locality for species
  • †Glyphonyx sp.
• †Glyphostoma
  • †Glyphostoma andersoni – or unidentified comparable form
  • †Glyphostoma gabbi
• †Glyphoturris
  • †Glyphoturris toulai
• †Glyptoactis
  • †Glyptoactis domenginica
• †Glyptodon
  • †Glyptodon sp.
• †Glyptotherium
  • †Glyptotherium arizonae – tentative report
  • †Glyptotherium cylindricum
  • †Glyptotherium floridanum
  • †Glyptotherium mexicanum – or unidentified comparable form
  • †Glyptotherium mexicanum
  • †Glyptotherium sp.
• †Glyptotoma
  • †Glyptotoma rhombica
• †Gnophomyia
  • †Gnophomyia sp.
• †Goeppertia
  • †Goeppertia tertiaria – or unidentified comparable form
• †Gomphotherium – tentative report
• †Gomphotherium – or unidentified comparable form
• †Gomphotherium
  • †Gomphotherium obscurum
  • †Gomphotherium sp.
• †Goniastrea
  • †Goniastrea canalis
• †Goniodiscaster – tentative report
  • †Goniodiscaster sp.
• †Goniopora
  • †Goniopora copayens
  • †Goniopora hilli
  • †Goniopora imperatoris
  • †Goniopora reussiana
  • †Goniopora sp.
• †Gopherus – or unidentified comparable form
• †Gopherus
  • †Gopherus donlaloi – type locality for species
  • †Gopherus sp.
• †Gordanops
  • †Gordanops baranoanus
• †Gouania
  • †Gouania miocenica – type locality for species
• †Gouldia
  • †Gouldia insularis
• †Granolaria
  • †Granolaria salmo
• †Granosolarium
  • †Granosolarium sp.
• †Gregorymys
  • †Gregorymys sp.
• †Guanajuatomys
  • †Guanajuatomys hibbardi
• †Guettarda
  • †Guettarda cookei
• †Gymnogramme
  • †Gymnogramme wadii – type locality for species
• †Gymnura
  • †Gymnura sp.
• †Gyrineum
  • †Gyrineum sp.
• †Gyrodes
  • †Gyrodes canrenoides
  • †Gyrodes robustus – or unidentified comparable form
  • †Gyrodes sp. – tentative report
• †Gyroidinoides
  • †Gyroidinoides sp.
• †Hadrianus – or unidentified related form
  • †Hadrianus sp.
• †Haimea
  • †Haimea bajasurensis
• †Haimesiastraea
  • †Haimesiastraea conferta
  • †Haimesiastraea peruviana
• †Haliotis
  • †Haliotis cracherodi
  • †Haliotis fulgens
  • †Haliotis rufescens – or unidentified comparable form
  • †Haliotis rufescens
  • †Haliotis sp.
• †Halistylus
  • †Halistylus pupoideus
• †Halonanus
  • †Halonanus pulchrus – tentative report
• †Hanetia
  • †Hanetia dalli
  • †Hanetia pallida
• †Haplocytheridea
  • †Haplocytheridea blanpiedi
• †Haplodiplatys
  • †Haplodiplatys crightoni – type locality for species
• †Haplorhus
  • †Haplorhus medranoensis – type locality for species
• †Harfordia
  • †Harfordia monksae – or unidentified comparable form
• †Harpa
  • †Harpa isthmica – type locality for species
  • †Harpa isthmica
• †Harpactocarcinus
  • †Harpactocarcinus americanus
• †Harvella
  • †Harvella sincola – or unidentified comparable form
• †Haydnella
  • †Haydnella steininbergi
• †Heliacus
  • †Heliacus sp.
• †Helicostegina
  • †Helicostegina dimorpha
• †Heliopora
  • †Heliopora mexicanae – type locality for species
  • †Heliopora mexicanae
  • †Heliopora sp. – tentative report
• †Helisoma
  • †Helisoma sp.
• †Helius
  • †Helius collemus – type locality for species
• †Helix – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Helix sp.
• †Hemiauchenia – or unidentified comparable form
• †Hemiauchenia
  • †Hemiauchenia gracilis
  • †Hemiauchenia guanajuatensis – type locality for species
  • †Hemiauchenia macrocephala – or unidentified comparable form
  • †Hemiauchenia macrocephala
  • †Hemiauchenia sp.
• †Hemicythere
  • †Hemicythere sp.
• †Hemicytheridea
  • †Hemicytheridea sp.
• †Hemipristis
  • †Hemipristis heteropleurus
  • †Hemipristis serra
  • †Hemipristis sp.
• †Hemirraghus
  • †Hemirraghus sp.
• †Hemisinus
  • †Hemisinus adjuntaensis – type locality for species
  • †Hemisinus miralejas
  • †Hemisinus reticulosus – type locality for species
  • †Hemisinus siliceus
• †Hemisurcula
  • †Hemisurcula eosilicata
• †Hemitoma
  • †Hemitoma sp.
• †Henria – tentative report
  • †Henria sp.
• †Hepatella
  • †Hepatella amazonica
• †Hercoglossa
  • †Hercoglossa popenoei – type locality for species
  • †Hercoglossa sp. – tentative report
  • †Hercoglossa ulrichi – or unidentified comparable form
• †Hercostomus – tentative report
  • †Hercostomus sp.
• †Here
  • †Here edwilsoni
  • †Here excavata
• †Hermanites
  • †Hermanites sp.
• †Herpetocetus – or unidentified related form
  • †Herpetocetus sp.
• †Hespererato
  • †Hespererato columbella
  • †Hespererato maugeriae
  • †Hespererato vitellina
• †Hesperiturris
  • †Hesperiturris zacatensis
• †Hesperomys
  • †Hesperomys taylori
• †Hesperotestudo
  • †Hesperotestudo sp.
• †Heterocoenia
  • †Heterocoenia sp. – tentative report
• †Heterodonax
  • †Heterodonax pacificus
• †Heterodontus
  • †Heterodontus sp.
• †Heterostegina
  • †Heterostegina sp. – tentative report
• †Heteroterma
  • †Heteroterma gabbi
• †Heterotermes
  • †Heterotermes primaevus – type locality for species
  • †Heterotermes sp.
• †Hexacorbula
  • †Hexacorbula gatunensis – or unidentified comparable form
• †Hexanchus
  • †Hexanchus griseus
• †Hexaplex – report made of unidentified related form or using admittedly obsolete nomenclature
• †Hexaplex
  • †Hexaplex erythrostomus – tentative report
  • †Hexaplex erythrostomus – or unidentified related form
  • †Hexaplex erythrostomus – or unidentified comparable form
  • †Hexaplex erythrostomus
• †Hexobelomeryx – tentative report
• †Hexobelomeryx
  • †Hexobelomeryx fricki – type locality for species
  • †Hexobelomeryx fricki – tentative report
  • †Hexobelomeryx fricki – or unidentified comparable form
  • †Hexobelomeryx fricki
  • †Hexobelomeryx sp.
• †Hiatella
  • †Hiatella arctica
• †Hindsiclava
  • †Hindsiclava alesidota
  • †Hindsiclava consors
  • †Hindsiclava henekeni – or unidentified comparable form
• †Hipponix
  • †Hipponix antiquatus
  • †Hipponix barbatus
  • †Hipponix cranioides
  • †Hipponix grayanus
  • †Hipponix panamensis
  • †Hipponix sp.
  • †Hipponix tumens
• †Hippotherium – or unidentified related form
  • †Hippotherium sp.
• †Hodomys
  • †Hodomys alleni
  • †Hodomys sp.
• †Holmesina
  • †Holmesina septentrionalis
  • †Holmesina sp.
• †Holospira
  • †Holospira eva – tentative report
  • †Holospira eva
• †Homalopoma
  • †Homalopoma carpenteri – or unidentified comparable form
  • †Homalopoma carpenteri
  • †Homalopoma luridum
• †Homola
  • †Homola bajaensis
• †Homotherium – or unidentified comparable form
  • †Homotherium sp.
• †Hyalina
  • †Hyalina californica
• †Hydrochoerus
  • †Hydrochoerus sp.
• †Hydrodamalis
  • †Hydrodamalis cuestae
  • †Hydrodamalis sp.
• †Hydroides
  • †Hydroides sp.
• †Hymenorus
  • †Hymenorus chiapasensis – type locality for species
• †Hyopsodus – or unidentified comparable form
  • †Hyopsodus sp.
• †Hyotissa
  • †Hyotissa haitensis
  • †Hyotissa hyotis
• †Hypertragulus
  • †Hypertragulus heikeni – type locality for species
• †Hypolagus
  • †Hypolagus ringoldensis – or unidentified comparable form
  • †Hypolagus vetus
• †Hyptia
  • †Hyptia deansi – type locality for species
• †Hyracodon – tentative report
  • †Hyracodon sp.
• †Hysteroconcha
  • †Hysteroconcha lupanaria
• †Ictalurus
  • †Ictalurus spodius – or unidentified comparable form
• †Icterus
  • †Icterus spurius
• †Ictinia
  • †Ictinia sp.
• †Ictiobus
  • †Ictiobus aguilerai – type locality for species
  • †Ictiobus sp.
• †Iddingsia – tentative report
  • †Iddingsia sp.
• †Iliacantha
  • †Iliacantha panamica
• †Ilyocypris
  • †Ilyocypris bradyi
• †Incisitermes
  • †Incisitermes krishnai – type locality for species
  • †Incisitermes krishnai
• †Indopacetus
  • †Indopacetus pacificus
• †Inga
  • †Inga miocenica – type locality for species
• †Irusella
  • †Irusella lamellifera
• †Ischnoptera
  • †Ischnoptera sp.
• †Isognomon
  • †Isognomon recognitus
• †Isophyllia
  • †Isophyllia rigida
  • †Isophyllia sinuosa
• †Isotomurus
  • †Isotomurus retardatus
• †Isurus
  • †Isurus benedeni
  • †Isurus oxyrinchus
  • †Isurus plana
  • †Isurus planus
  • †Isurus precursor – or unidentified comparable form
  • †Isurus sp.
• †Jamilcotatus – type locality for genus
  • †Jamilcotatus kumiaica – type locality for species
• †Japonactaeon
  • †Japonactaeon punctostriata
• †Jaton
  • †Jaton festiva
  • †Jaton festivus
• †Jaywilsonomys
  • †Jaywilsonomys ojinagaensis – type locality for species
• †Jenneria
  • †Jenneria pustulata
• †Jimomys – or unidentified related form
  • †Jimomys sp.
• †Jouannetia
  • †Jouannetia francesae
• †Jugosocythereis
  • †Jugosocythereis vicksburgensis
• †Juliacorbula
  • †Juliacorbula bicarinata
  • †Juliacorbula luteola – or unidentified comparable form
  • †Juliacorbula luteola
• †Kapalmerella
  • †Kapalmerella arenicola
  • †Kapalmerella mortoni
• †Kelletia
  • †Kelletia kelleti
• †Kellia
  • †Kellia suborbicularis
• †Kellyella
  • †Kellyella texana – tentative report
• †Kentriodon – or unidentified related form
• †Kentriodon
  • †Kentriodon diusinus – type locality for species
  • †Kentriodon sp.
• †Kinosternon
  • †Kinosternon sp.
• †Knefastia
  • †Knefastia olivacea
  • †Knefastia olivaceus
• †Kogia
  • †Kogia breviceps
• †Krithe – tentative report
• †Krithe
  • †Krithe hiwanneensis
  • †Krithe vicksburgensis
• †Kuphus
  • †Kuphus incrassatus
• †Kurtziella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Kurtziella
  • †Kurtziella plumbea
  • †Kurtziella serta
  • †Kurtziella stenotella
• †Lacinia
  • †Lacinia santander
• †Lacuna
  • †Lacuna carinata
  • †Lacuna unifasciata
• †Laevicardium
  • †Laevicardium elatum
  • †Laevicardium laevicardium
  • †Laevicardium serratum
  • †Laevicardium substriatum
• †Lagenodelphis
  • †Lagenodelphis hosei
• †Lagueus
  • †Lagueus californicus
• †Lamellaria
  • †Lamellaria diegoensis – or unidentified comparable form
• †Lamprolithax
  • †Lamprolithax sp.
• †Lampropeltis
  • †Lampropeltis intermedius
• †Lapparia
  • †Lapparia nuda – or unidentified comparable form
• †Lasaea
  • †Lasaea adansoni
  • †Lasaea sp.
• †Latirus – tentative report
• †Latirus
  • †Latirus moorei – tentative report
  • †Latirus neoulios
  • †Latirus sp.
• †Lecythidophyllum
  • †Lecythidophyllum couratarioides – type locality for species
• †Ledina
  • †Ledina smirna – tentative report
  • †Ledina smirna
• †Leguminocythereis
  • †Leguminocythereis sp.
• †Leguminosites
  • †Leguminosites mexicanus – type locality for species
  • †Leguminosites oaxacensis – type locality for species
• †Leopecten
  • †Leopecten bakeri
  • †Leopecten macdonaldi – or unidentified comparable form
  • †Leopecten stillmani – or unidentified comparable form
• †Lepicythara
  • †Lepicythara sp.
• †Lepidocyclina
  • †Lepidocyclina antillea
  • †Lepidocyclina macdonaldi
  • †Lepidocyclina sp.
• †Lepidocyrtus
  • †Lepidocyrtus geayi – or unidentified comparable form
  • †Lepidocyrtus sp.
• †Lepidozona
  • †Lepidozona pectinulatus
  • †Lepidozona sp.
• †Lepilucina
  • †Lepilucina gratis – or unidentified comparable form
• †Leptarctus
  • †Leptarctus sp.
• †Leptochoerus
  • †Leptochoerus sp.
• †Leptochromus
  • †Leptochromus palaeomexicanus – type locality for species
• †Leptodactylus
  • †Leptodactylus labialis
• †Leptohyphes
  • †Leptohyphes sp.
• †Leptomeryx – or unidentified comparable form
  • †Leptomeryx sp.
• †Leptomussa
  • †Leptomussa sp.
• †Leptonannus
  • †Leptonannus miocenicus – type locality for species
• †Leptonycteris
  • †Leptonycteris nivalis
• †Leptopecten
  • †Leptopecten latiauratus
  • †Leptopecten latiauritus
  • †Leptopecten praevalidus – type locality for species
  • †Leptopecten tumbezensis – or unidentified related form
• †Leptopharsa
  • †Leptopharsa tacanae – type locality for species
• †Leptosalda – type locality for genus
  • †Leptosalda chiapensis – type locality for species
• †Leptoseris
  • †Leptoseris portoricensis – or unidentified comparable form
• †Lepus
  • †Lepus californicus – or unidentified comparable form
  • †Lepus sp.
• †Lestodiplosis – tentative report
• †Lestodiplosis
  • †Lestodiplosis sp.
• †Lestremia
  • †Lestremia sp.
• †Leukoma
  • †Leukoma grata
  • †Leukoma staminea
• †Levicyclus – type locality for genus
• †Levicyclus
  • †Levicyclus tepetate – type locality for species
  • †Levicyclus tepetate
• †Levifusus
  • †Levifusus sp.
• †Lima
  • †Lima kennedyi – type locality for species
  • †Lima tetrica
• †Limnaea
  • †Limnaea sp.
• †Limopsis
  • †Limopsis aguilari
• †Linthia
  • †Linthia caraibensis – or unidentified comparable form
• †Linuparus
  • †Linuparus wilcoxensis
• †Liolithax
  • †Liolithax kernensis – tentative report
  • †Liolithax kernensis – or unidentified related form
• †Liomys
  • †Liomys irroratus
• †Liotia
  • †Liotia woodringi
• †Liposcelis
  • †Liposcelis sp.
• †Liquidambar
  • †Liquidambar incerta – type locality for species
• †Lirophora
  • †Lirophora falconensis
  • †Lirophora latilirata
  • †Lirophora mactropsis
  • †Lirophora mariae
• †Lithophaga
  • †Lithophaga sp.
• †Lithophysema
  • †Lithophysema stewarti
• †Lithoseopsis
  • †Lithoseopsis elongata – type locality for species
  • †Lithoseopsis elongata
• †Lithothamnion – tentative report
  • †Lithothamnion sp.
• †Litorhadia
  • †Litorhadia compsa
  • †Litorhadia mater – tentative report
  • †Litorhadia santaanai – tentative report
  • †Litorhadia santaanai
• †Littorina
  • †Littorina keenae
  • †Littorina planaxis
  • †Littorina scutulata
• †Litus
  • †Litus mexicanus – type locality for species
• †Lobatus
  • †Lobatus gigas
• †Lobonotus
  • †Lobonotus mexicanus
• †Longchaeus
  • †Longchaeus canaliculata
  • †Longchaeus diademata
• †Longusorbis
  • †Longusorbis eutychius
• †Lontra
  • †Lontra canadensis
• †Lopha
  • †Lopha veatchii
  • †Lopha vicksburgensis
• †Lophoranina
  • †Lophoranina bishopi – type locality for species
  • †Lophoranina bishopi
  • †Lophoranina cristaspina
  • †Lophoranina precocious
• †Lottia
  • †Lottia digitalis
  • †Lottia gigantea
  • †Lottia limatula
  • †Lottia scabra
  • †Lottia stanfordiana
• †Loxoconcha
  • †Loxoconcha woodwardsensis – or unidentified related form
• †Lucapinella
  • †Lucapinella callomarginata
• †Lucina
  • †Lucina pectinata
  • †Lucina sp.
• †Lucinia
  • †Lucinia nuttalli
• †Lucinisca
  • †Lucinisca nuttalli
  • †Lucinisca sp.
• †Lucinoma
  • †Lucinoma annulatum
• †Lunatia
  • †Lunatia lacrimans
• †Lustrochernes – tentative report
  • †Lustrochernes sp. 1informal
  • †Lustrochernes sp. 2informal
• †Lutjanus
  • †Lutjanus novemfasciatus – or unidentified comparable form
• †Lyncina
  • †Lyncina amygdalina – or unidentified comparable form
• †Lynx
  • †Lynx rufus
  • †Lynx sp.
• †Lyria
  • †Lyria andersoni
• †Lyrischapa
  • †Lyrischapa lajollaensis
  • †Lyrischapa spinifera
• †Lyropecten
  • †Lyropecten crassicardo – or unidentified comparable form
  • †Lyropecten crassicardo
  • †Lyropecten dumblei
  • †Lyropecten gallegosi – type locality for species
  • †Lyropecten miguelensis
  • †Lyropecten modulatus
  • †Lyropecten nicholsi – or unidentified comparable form
  • †Lyropecten nicholsi
  • †Lyropecten pretiosus
  • †Lyropecten sp.
• †Lyssomanes
  • †Lyssomanes sp.
• †Maatidesmus – type locality for genus
  • †Maatidesmus paachtun – type locality for species
• †Maccaffertium
  • †Maccaffertium annae – type locality for species
• †Machairodus
  • †Machairodus sp.
• †Macoma
  • †Macoma indentata
  • †Macoma nasuta
  • †Macoma secta
  • †Macoma sp.
• †Macroacaena
  • †Macroacaena venturai
• †Macrocallista
  • †Macrocallista squalida
  • †Macrocallista squalidus
• †Macrocypraea
  • †Macrocypraea veintensis – type locality for species
• †Macron
  • †Macron aethiops
  • †Macron hartmanni – type locality for species
  • †Macron hartmanni
  • †Macron lividus
• †Mactra
  • †Mactra sp.
• †Mactromeris
  • †Mactromeris hemphillii
  • †Mactromeris merriami – or unidentified comparable form
  • †Mactromeris sp.
• †Mactrotoma
  • †Mactrotoma californica
  • †Mactrotoma nasuta
• †Madracis
  • †Madracis johnwellsi – type locality for species
• †Maevia – or unidentified comparable form
  • †Maevia sp.
• †Malea
  • †Malea ringens
  • †Malea ringenss
• †Malepellis – type locality for genus
  • †Malepellis extincta – type locality for species
• †Mammut – tentative report
• †Mammut
  • †Mammut americanum
  • †Mammut sp.
• †Mammuthus
  • †Mammuthus columbi – or unidentified comparable form
  • †Mammuthus columbi
  • †Mammuthus hayi – or unidentified comparable form
  • †Mammuthus primigenius
  • †Mammuthus sp.
• †Mancalla
  • †Mancalla cedrosensis – type locality for species
  • †Mancalla cedrosensis
  • †Mancalla sp.
• †Mangelia
  • †Mangelia variegata
• †Manota
  • †Manota sp.
• †Manzonia
  • †Manzonia oldroydae
  • †Manzonia purpurea
• †Marfilomys
  • †Marfilomys aewoodi
• †Margarites
  • †Margarites semiornata – or unidentified comparable form
• †Marginella
  • †Marginella cineracea – or unidentified comparable form
  • †Marginella cineracea
  • †Marginella cordiformis
  • †Marginella dalli
  • †Marginella latior
  • †Marginella succinea – or unidentified comparable form
  • †Marginella willcoxiana
• †Marmosa
  • †Marmosa canescens
  • †Marmosa mexicana
• †Marmota
  • †Marmota sp.
• †Marsupina
  • †Marsupina strongi
• †Martesia
  • †Martesia sp.
• †Mastotermes
  • †Mastotermes electromexicus – type locality for species
  • †Mastotermes electromexicus
  • †Mastotermes sp.
• †Matuna – type locality for genus
• †Matuna
  • †Matuna bechlyi – type locality for species
  • †Matuna sp.
• †Mauicetus – or unidentified related form
  • †Mauicetus sp.
• †Maxwellia
  • †Maxwellia gemma
  • †Maxwellia santarosana
• †Meandrina
  • †Meandrina antiguensis
  • †Meandrina meandrites
• †Medetera
  • †Medetera amissa – type locality for species
  • †Medetera sp.
  • †Medetera totolapa – type locality for species
• †Megabalanus
  • †Megabalanus californicus
  • †Megabalanus tintinnabulum – or unidentified comparable form
  • †Megabalanus tintinnabulum
• †Megalonyx
  • †Megalonyx sp.
  • †Megalonyx wheatleyi
• †Megapaloelodus – tentative report
  • †Megapaloelodus opsigonus
• †Megaselia
  • †Megaselia sp.
• †Megatebennus
  • †Megatebennus bimaculata
• †Megatylopus – tentative report
• †Megatylopus
  • †Megatylopus matthewi – or unidentified comparable form
  • †Megatylopus sp.
• †Megistostoma
  • †Megistostoma gabbianum
• †Meioceras
  • †Meioceras constrictum
• †Melampus
  • †Melampus mousleyi
• †Melanatria – tentative report
• †Melanatria
  • †Melanatria sp.
  • †Melanatria ypresiana – type locality for species
• †Melastomites
  • †Melastomites angustus – type locality for species
  • †Melastomites obovatus – type locality for species
  • †Melastomites obovatus
• †Meleagris
  • †Meleagris gallopavo
• †Melongena
  • †Melongena melongena
  • †Melongena patula
• †Meniscotherium
  • †Meniscotherium chamense
• †Menoceras
  • †Menoceras barbouri
• †Meoma
  • †Meoma sp.
• †Mephitis
  • †Mephitis mephitis
• †Meretrix
  • †Meretrix concinna
• †Merriamaster – or unidentified comparable form
  • †Merriamaster pacificus
• †Merychippus – report made of unidentified related form or using admittedly obsolete nomenclature
• †Merychippus
  • †Merychippus primus – or unidentified comparable form
  • †Merychippus sejunctus – or unidentified comparable form
  • †Merychippus sp.
• †Merychyus
  • †Merychyus elegans – or unidentified comparable form
  • †Merychyus minimus – or unidentified related form
• †Merycodus
  • †Merycodus sabulonis
• †Merycoidodon
  • †Merycoidodon sp.
• †Mesalia
  • †Mesalia alabamiensis
  • †Mesalia claibornensis
  • †Mesalia martinezensis – or unidentified comparable form
  • †Mesalia martinezensis
  • †Mesalia sayi
• †Mesepipsocus
  • †Mesepipsocus clarus – type locality for species
• †Mesocena
  • †Mesocena apiculata
• †Mesodesma
  • †Mesodesma singleyi
• †Mesohippus
  • †Mesohippus sp.
• †Mesorhaga
  • †Mesorhaga pseudolacrymans – type locality for species
  • †Mesorhaga pseudolacrymans
• †Mespilodaphne
  • †Mespilodaphne palomaresensis – type locality for species
• †Metaxytherium
  • †Metaxytherium arctodites – type locality for species
• †Metopina
  • †Metopina sp.
• †Metulella
  • †Metulella fusiformis
• †Micrempis
  • †Micrempis brevis – type locality for species
• †Microdrillia
  • †Microdrillia isthmica
  • †Microdrillia istmica
• †Microgaza
  • †Microgaza santarosaensis
• †Micromalthus
  • †Micromalthus debilis
• †Microporella
  • †Microporella marsupiata
• †Micropygomyia
  • †Micropygomyia paterna – type locality for species
• †Microtus
  • †Microtus mexicanus
  • †Microtus pennsylvanicus
• †Milneria
  • †Milneria kelseyi
• †Miohippus
  • †Miohippus assinoboiensis
• †Mionelater – type locality for genus
  • †Mionelater planatus – type locality for species
• †Miracinonyx
  • †Miracinonyx studeri – or unidentified comparable form
• †Mirometa – type locality for genus
  • †Mirometa valdespinosa – type locality for species
• †Mirounga
  • †Mirounga angustirostris
• †Mistura – type locality for genus
  • †Mistura perplexa – type locality for species
• †Mitra
  • †Mitra catalinae
  • †Mitra eucadoriana
  • †Mitra fulgurita – or unidentified comparable form
  • †Mitra idae – tentative report
  • †Mitra idae
  • †Mitra rupicola
  • †Mitra sp.
  • †Mitra striolata
• †Mitrella
  • †Mitrella asema
  • †Mitrella carinata
  • †Mitrella debooyi
  • †Mitrella guttata
  • †Mitrella tuberosa
• †Mitromorpha
  • †Mitromorpha aspera
  • †Mitromorpha filosa
• †Mnemosyne – tentative report
  • †Mnemosyne sp.
• †Mobula
  • †Mobula sp.
• †Mochloribatula
  • †Mochloribatula smithi – type locality for species
• †Modiolus
  • †Modiolus capax
  • †Modiolus carpenteri
• †Modisimus
  • †Modisimus sp.
• †Modulus
  • †Modulus cerodes
  • †Modulus disculus
• †Molothrus
  • †Molothrus aeneus
  • †Molothrus ater
• †Monardia – tentative report
  • †Monardia sp.
• †Monoplex
  • †Monoplex aquatilis
  • †Monoplex parthenopeus
• †Montastrea
  • †Montastrea antilliana
  • †Montastrea bainbridgensis
  • †Montastrea cavernosa
  • †Montastrea gabbi
  • †Montastrea laurae – type locality for species
  • †Montastrea limbata
  • †Montastrea tampaensis
• †Montezumella
  • †Montezumella amenosi
  • †Montezumella tubulata
• †Mopalia
  • †Mopalia ciliata
  • †Mopalia hindsi
  • †Mopalia muscosa
• †Moquillea
  • †Moquillea mexicana – type locality for species
• †Morula
  • †Morula lugubris
• †Morum
  • †Morum oniscus
• †Morus
  • †Morus sp.
• †Muracypraea
  • †Muracypraea sp.
• †Murex
  • †Murex chipolanus
  • †Murex mississippiensis
  • †Murex sp.
• †Murexella
  • †Murexella sp.
• †Murexiella
  • †Murexiella macgintyi
  • †Murexiella veracruzana – type locality for species
• †Murexsul
  • †Murexsul thalmanni – type locality for species
• †Muricanthus
  • †Muricanthus nigritus
  • †Muricanthus radix
• †Murrayina
  • †Murrayina gunteri
• †Musculus
  • †Musculus carlotae
• †Mussa
  • †Mussa angulosa
• †Mustela
  • †Mustela nigripes
  • †Mustela reliquus – type locality for species
• †Mustelus
  • †Mustelus sp.
• †Mycetobia
  • †Mycetobia sp.
• †Mycetophyllia
  • †Mycetophyllia bullbrooki
• †Myliobatis
  • †Myliobatis sp.
• †Myopsocus
  • †Myopsocus sp.
• †Myotis
  • †Myotis sp.
• †Myrcia
  • †Myrcia saraviana – type locality for species
• †Myrmecophaga
  • †Myrmecophaga tridactyla
• †Mysmena
  • †Mysmena fossilis – type locality for species
• †Mytilus
  • †Mytilus californianus
  • †Mytilus mathewsonii – or unidentified comparable form
  • †Mytilus mathewsonii
  • †Mytilus multiformis
  • †Mytilus sp.
• †Mytonomys
  • †Mytonomys gaitania
• †Nannippus – tentative report
• †Nannippus
  • †Nannippus aztecus – or unidentified comparable form
  • †Nannippus aztecus
  • †Nannippus peninsulatus
  • †Nannippus sp.
• †Nannocetus – or unidentified related form
  • †Nannocetus sp.
• †Nannodiella
  • †Nannodiella rintriada
• †Nannohelea
  • †Nannohelea sp.
• †Nanosiren
  • †Nanosiren garciae – or unidentified comparable form
• †Nanotragulus
  • †Nanotragulus sp.
• †Nassa
  • †Nassa fossata
  • †Nassa mendica
  • †Nassa perpinguis – or unidentified related form
  • †Nassa perpinguis
• †Nassarina
  • †Nassarina wadei
• †Nassarius – tentative report
• †Nassarius
  • †Nassarius cerralvensis
  • †Nassarius delosi
  • †Nassarius fossatus
  • †Nassarius leucops – or unidentified comparable form
  • †Nassarius mendicus
  • †Nassarius pacis
  • †Nassarius perpingus
  • †Nassarius sp.
  • †Nassarius tegulus
  • †Nassarius tehuantepecensis
  • †Nassarius versicolor
  • †Nassarius waltonensis – tentative report
  • †Nassarius zacatensis
• †Nasutitermes
  • †Nasutitermes electrinus – type locality for species
  • †Nasutitermes electrinus
  • †Nasutitermes sp.
• †Natica
  • †Natica alazana
  • †Natica chemnitzii
  • †Natica dumblei – or unidentified comparable form
  • †Natica perspecta – tentative report
  • †Natica sp.
• †Naticarius
  • †Naticarius canrena – or unidentified comparable form
  • †Naticarius canrena
• †Navahoceros
  • †Navahoceros fricki
• †Navicula
  • †Navicula clavata – or unidentified comparable form
  • †Navicula lyra
• †Nayadina
  • †Nayadina batequensis
• †Neaeromya
  • †Neaeromya obliqua
• †Nebrius
  • †Nebrius sp.
• †Necronectes
  • †Necronectes nodosa – type locality for species
  • †Necronectes sp.
  • †Necronectes tajinensis – type locality for species
  • †Necronectes tajinensis
• †Nectandra
  • †Nectandra areolata
  • †Nectandra tehuantepecensis – type locality for species
• †Negaprion
  • †Negaprion sp.
• †Nehalennia
  • †Nehalennia sp.
• †Neivamyrmex
  • †Neivamyrmex sp.
• †Nemocardium
  • †Nemocardium diversum – tentative report
  • †Nemocardium linteum
• †Neobernaya
  • †Neobernaya spadicea
• †Neocallichirus
  • †Neocallichirus aetodes
  • †Neocallichirus rhinos – or unidentified comparable form
  • †Neocallichirus sp.
  • †Neocallichirus vaughani
• †Neochoerus
  • †Neochoerus sp.
• †Neoconorbina
  • †Neoconorbina terquemi – or unidentified comparable form
• †Neocrepidodera
  • †Neocrepidodera antiqua – type locality for species
• †Neoerythromma
  • †Neoerythromma sp.
• †Neohipparion
  • †Neohipparion eurystyle – type locality for species
  • †Neohipparion eurystyle
  • †Neohipparion sp.
• †Neoliodes
  • †Neoliodes brevitarsus – type locality for species
• †Neomachilellus – tentative report
• †Neomachilellus
  • †Neomachilellus ezetaelenensis – type locality for species
  • †Neomachilellus ezetaelenensis
  • †Neomachilellus sp.
• †Neomonachus
  • †Neomonachus tropicalis
• †Neoparentia
  • †Neoparentia chiapensis – type locality for species
• †Neorapana
  • †Neorapana tuberculata
• †Neotanygastrella
  • †Neotanygastrella wheeleri – type locality for species
  • †Neotanygastrella wheeleri
• †Neotherium – or unidentified related form
• †Neotherium
  • †Neotherium sp.
• †Neotoma
  • †Neotoma albigula
  • †Neotoma cinerea – tentative report
  • †Neotoma floridana – or unidentified comparable form
  • †Neotoma lepida
  • †Neotoma mexicana – tentative report
  • †Neotoma mexicana
  • †Neotoma micropus – tentative report
  • †Neotoma micropus
  • †Neotoma sawrockensis – or unidentified comparable form
  • †Neotoma sp.
• †Neoulosomus
  • †Neoulosomus hurdi – type locality for species
• †Neptunea
  • †Neptunea mucronata – or unidentified comparable form
• †Nerita
  • †Nerita bernardi
  • †Nerita funiculata
  • †Nerita scabricosta
  • †Nerita tampaensis
• †Neritina
  • †Neritina woodwardi
• †Neverita
  • †Neverita limula
  • †Neverita reclusiana
  • †Neverita reclusianus – or unidentified comparable form
  • †Neverita reclusianus
  • †Neverita recluzianus – or unidentified comparable form
  • †Neverita recluzianus
  • †Neverita sp.
• †Niso
  • †Niso interrupta
  • †Niso willcoxiana
• †Niveria
  • †Niveria suffusa
• †Nodipecten
  • †Nodipecten cerrosensis – or unidentified comparable form
  • †Nodipecten cerrosensis
  • †Nodipecten collierensis
  • †Nodipecten estrellanus – or unidentified comparable form
  • †Nodipecten nodosus
  • †Nodipecten subnodosus
  • †Nodipecten veatchii
• †Nodulus
  • †Nodulus kelseyi
• †Nogodina
  • †Nogodina chiapaneca – type locality for species
• †Nogueirapis
  • †Nogueirapis silacea – type locality for species
  • †Nogueirapis silacea
• †Norrisia
  • †Norrisia norrisi
• †Nothrotheriops
  • †Nothrotheriops sp.
  • †Nothrotheriops texanus
• †Nothrotherium
  • †Nothrotherium shastense – or unidentified comparable form
  • †Nothrotherium sp.
• †Notiosorex
  • †Notiosorex crawfordi
  • †Notiosorex repenningi
• †Notolagus
  • †Notolagus sp.
  • †Notolagus velox – type locality for species
  • †Notolagus velox
• †Notopus
  • †Notopus minutus
• †Notorhynchus
  • †Notorhynchus sp.
• †Nucella
  • †Nucella emarginata
  • †Nucella lamellosa
• †Nucleopsis
  • †Nucleopsis sp.
• †Nucula
  • †Nucula declivis
  • †Nucula mauricensis
  • †Nucula sphenopsis
  • †Nucula tenuisculpta
• †Nuculana
  • †Nuculana acuta
  • †Nuculana sp.
• †Nummulites
  • †Nummulites floridensis
  • †Nummulites panamensis
  • †Nummulites striatoreticulatus
  • †Nummulites willcoxi
• †Nutricola
  • †Nutricola tantilla
• †Nuttallia
  • †Nuttallia nuttallii
  • †Nuttallia toulai – type locality for species
  • †Nuttallia toulai
• †Nuttallina
  • †Nuttallina californica
• †Ocenebra
  • †Ocenebra foveolata
  • †Ocenebra interfossa
  • †Ocenebra poulsoni
• †Ochlerotatus
  • †Ochlerotatus sp. 1informal
  • †Ochlerotatus sp. 2informal
• †Odocoileus – tentative report
• †Odocoileus – or unidentified comparable form
• †Odocoileus
  • †Odocoileus hemionus
  • †Odocoileus sp.
• †Odontaspis – tentative report
• †Odontaspis
  • †Odontaspis acutissima
  • †Odontaspis sp.
• †Odontogryphaea
  • †Odontogryphaea thirsae – tentative report
  • †Odontogryphaea thirsae
• †Odontoporella
  • †Odontoporella adpressa
• †Odontopteryx – tentative report
  • †Odontopteryx sp.
• †Odostomia
  • †Odostomia aepynota
  • †Odostomia donilla – or unidentified comparable form
  • †Odostomia io – or unidentified comparable form
  • †Odostomia navisa
  • †Odostomia phanea
  • †Odostomia phanella – or unidentified comparable form
  • †Odostomia sp.
  • †Odostomia terebellum
  • †Odostomia trachis
  • †Odostomia virginalis
• †Oeclixius – type locality for genus
  • †Oeclixius amphion – type locality for species
• †Olequahia
  • †Olequahia domenginica
• †Oliarus
  • †Oliarus sp. 1informal
  • †Oliarus sp. 2informal
• †Oligaphelenchoides – type locality for genus
  • †Oligaphelenchoides atrebora – type locality for species
• †Oligodiodon
  • †Oligodiodon vetus – or unidentified comparable form
  • †Oligodiodon vetus
• †Oligodiplogaster – type locality for genus
  • †Oligodiplogaster antiqua – type locality for species
• †Oliva
  • †Oliva corticata
  • †Oliva cristobalcoloni
  • †Oliva cylindrica – or unidentified comparable form
  • †Oliva cylindrica
  • †Oliva davisac
  • †Oliva incrassata
  • †Oliva liodes – or unidentified comparable form
  • †Oliva liodes
  • †Oliva mendezensis
  • †Oliva mississippiense
  • †Oliva mississippiensis – tentative report
  • †Oliva mississippiensis
  • †Oliva polpasta – or unidentified comparable form
  • †Oliva sayana – or unidentified comparable form
  • †Oliva sayana
  • †Oliva sp.
  • †Oliva spicata
  • †Oliva subplicata
  • †Oliva venulata – or unidentified related form
• †Olivella – tentative report
• †Olivella
  • †Olivella baetica
  • †Olivella biplicata
  • †Olivella blastoides
  • †Olivella dama – or unidentified comparable form
  • †Olivella dama
  • †Olivella gracilis
  • †Olivella mathewsonii
  • †Olivella mutica
  • †Olivella pedroana
• †Onychomys
  • †Onychomys leucogaster
  • †Onychomys sp.
• †Opalia
  • †Opalia chacei
  • †Opalia insculpta
  • †Opalia wroblewskyi
• †Operculina
  • †Operculina sp.
• †Ophiodennella
  • †Ophiodennella graciosana
• †Ophiodermella
  • †Ophiodermella incisa
  • †Ophiodermella ophioderma
• †Ophiomorpha
  • †Ophiomorpha sp.
• †Oplegnathus
  • †Oplegnathus sp.
• †Oppia
  • †Oppia hurdi – type locality for species
  • †Oppia mexicana – type locality for species
  • †Oppia mexicana
  • †Oppia setigera – type locality for species
• †Orbicella
  • †Orbicella annularis
  • †Orbicella franksi – or unidentified comparable form
• †Orbitulina
  • †Orbitulina universa
• †Orchestina
  • †Orchestina mortua – type locality for species
  • †Orchestina mortua
• †Orcinus
  • †Orcinus orca
• †Oregonia
  • †Oregonia spinifera – type locality for species
  • †Oregonia spinifera
• †Orfelia
  • †Orfelia sp. 1informal
  • †Orfelia sp. 2informal
• †Orthaulax
  • †Orthaulax pugnax
• †Orthogeomys
  • †Orthogeomys sp.
• †Orthophragmina
  • †Orthophragmina sp.
• †Orthosurcula
  • †Orthosurcula longipersa
  • †Orthosurcula longispersa
• †Orthoyoldia
  • †Orthoyoldia psammotaea
• †Oryzomys
  • †Oryzomys palustris
• †Ostrea
  • †Ostrea angelica – or unidentified comparable form
  • †Ostrea angelica
  • †Ostrea bougeoisii
  • †Ostrea conchaphila
  • †Ostrea costaricensis
  • †Ostrea duvali
  • †Ostrea eothirsae – tentative report
  • †Ostrea eothirsae
  • †Ostrea erici
  • †Ostrea escondidia
  • †Ostrea gierharti
  • †Ostrea intermedoides – or unidentified comparable form
  • †Ostrea lurida
  • †Ostrea parrensis
  • †Ostrea popaensis
  • †Ostrea sp.
  • †Ostrea strictiplicata
  • †Ostrea tayloriana
• †Otodus
  • †Otodus megalodon
  • †Otodus rectus
• †Ovis
  • †Ovis sp.
• †Ovulum
  • †Ovulum sp. – tentative report
• †Oxyaena – or unidentified comparable form
  • †Oxyaena sp.
• †Oxydactylus – or unidentified comparable form
• †Oxydactylus
  • †Oxydactylus longipes
• †Oxypoda
  • †Oxypoda binodosa – type locality for species
• †Oxyura
  • †Oxyura zapatanima – type locality for species
• †Pachycondyla
  • †Pachycondyla sp. 1informal
  • †Pachycondyla sp. 2informal
  • †Pachycondyla sp. 3informal
• †Pachycrommium
  • †Pachycrommium clarki
• †Pachygaster
  • †Pachygaster antiqua – type locality for species
• †Paenemarmota
  • †Paenemarmota barbouri
  • †Paenemarmota mexicana
  • †Paenemarmota sp.
• †Paguristes
  • †Paguristes mexicanussensu lato
  • †Paguristes mexicanus
• †Palaeogryon
  • †Palaeogryon muesebecki
• †Palaeolama – or unidentified comparable form
  • †Palaeolama sp.
• †Palaeopinnixa
  • †Palaeopinnixa perornata
• †Palaeopsammia
  • †Palaeopsammia zitteli
• †Palaeotetradonema – type locality for genus
  • †Palaeotetradonema phlebotomae – type locality for species
• †Palaminus
  • †Palaminus sp.
• †Paleograssiella – type locality for genus
  • †Paleograssiella chiapanicum – type locality for species
• †Paleoparadoxia – or unidentified related form
  • †Paleoparadoxia sp.
• †Palmerella – tentative report
  • †Palmerella sp.
• †Paludestrina
  • †Paludestrina sp.
• †Pampatherium
  • †Pampatherium mexicanum – type locality for species
  • †Pampatherium mexicanum – or unidentified comparable form
  • †Pampatherium mexicanum
• †Pandanaris
  • †Pandanaris convexa
• †Panopea
  • †Panopea floridana
  • †Panopea globosa
  • †Panopea oblongata – tentative report
  • †Panopea parawhitfieldi
• †Panthera
  • †Panthera leo
  • †Panthera onca – or unidentified comparable form
  • †Panthera onca
• †Paphonotia
  • †Paphonotia elliptica
• †Papyridea
  • †Papyridea aspersa
• †Paracorallicarcinus
  • †Paracorallicarcinus tricarinatus
• †Paracyathus
  • †Paracyathus sp.
  • †Paracyathus stearnsii
• †Paracytheridea
  • †Paracytheridea belhavenensis
• †Paradipsosaurus – type locality for genus
  • †Paradipsosaurus mexicanus – type locality for species
• †Paraliochthonius
  • †Paraliochthonius miomaya – type locality for species
• †Paramylodon
  • †Paramylodon harlani
  • †Paramylodon sp.
• †Paranotolagus – tentative report
• †Paranotolagus
  • †Paranotolagus complicatus – type locality for species
  • †Paranotolagus complicatus
  • †Paranotolagus sp.
• †Parapaenemarmota
  • †Parapaenemarmota pattersoni
• †Parapimodus
  • †Parapimodus denaius – type locality for species
• †Parapontoporia – type locality for genus
  • †Parapontoporia pacifica – type locality for species
• †Paraseraphs
  • †Paraseraphs erracticus
  • †Paraseraphs erraticus
• †Parastemmiulus – type locality for genus
  • †Parastemmiulus elektron – type locality for species
• †Paratemnoides – tentative report
  • †Paratemnoides sp.
• †Parathranium
  • †Parathranium tenuipes
• †Paratoceras – or unidentified comparable form
• †Paratoceras
  • †Paratoceras sp.
  • †Paratoceras tedfordi – type locality for species
• †Paraverrucoides
  • †Paraverrucoides alabamensis
• †Parietobalaena – or unidentified related form
  • †Parietobalaena sp.
• †Parisis
  • †Parisis batequensis – type locality for species
• †Parona
  • †Parona sp.
• †Paronella – tentative report
  • †Paronella sp.
• †Parvilucina
  • †Parvilucina mazatlanica
• †Patinopecten
  • †Patinopecten boesei
  • †Patinopecten bosei
  • †Patinopecten coosensis – or unidentified comparable form
  • †Patinopecten dilleri
  • †Patinopecten healeyi
  • †Patinopecten healyi
  • †Patinopecten santarosaliensis – type locality for species
  • †Patinopecten sp.
• †Pattalophyllia
  • †Pattalophyllia grumi
• †Pavona
  • †Pavona clavus
  • †Pavona gigantea
  • †Pavona modeloensis – type locality for species
  • †Pavona trinitatis
• †Pecten
  • †Pecten aletes
  • †Pecten aztecus
  • †Pecten bellus
  • †Pecten byramensis – tentative report
  • †Pecten ceibanus
  • †Pecten condylomatus
  • †Pecten glyptus – or unidentified comparable form
  • †Pecten lecontei – or unidentified related form
  • †Pecten lecontei
  • †Pecten mexicanus
  • †Pecten santarosanus
  • †Pecten sp.
• †Pedipes
  • †Pedipes liratus
• †Pelecanus
  • †Pelecanus erythrorhynchus
• †Peloropeodes
  • †Peloropeodes paleomexicana – type locality for species
• †Peneroplis
  • †Peneroplis proteus
• †Penitella
  • †Penitella penita – or unidentified comparable form
  • †Penitella penita
• †Peponocephala
  • †Peponocephala electra
• †Peratrimera – type locality for genus
  • †Peratrimera mexicana – type locality for species
• †Perchoerus
  • †Perchoerus probus
• †Periglypta
  • †Periglypta multicostata
• †Periscelis
  • †Periscelis annectans – type locality for species
• †Perissitys
  • †Perissitys stewarti
• †Perissocytheridea
  • †Perissocytheridea sp.
• †Perissolax
  • †Perissolax diga
• †Perognathus
  • †Perognathus huastecensis
  • †Perognathus sp.
• †Peromyscus
  • †Peromyscus boylii
  • †Peromyscus leucopus
  • †Peromyscus pectoralis
  • †Peromyscus sp.
• †Persististrombus
  • †Persististrombus granulatus – or unidentified comparable form
  • †Persististrombus granulatus
• †Perturbator – type locality for genus
  • †Perturbator corniger – type locality for species
• †Petaloconchus
  • †Petaloconchus montereyensis – or unidentified comparable form
  • †Petaloconchus sculpturatus
  • †Petaloconchus sp.
• †Petricola
  • †Petricola carditoides
• †Petrochirus
  • †Petrochirus sp.
• †Pewelagus
  • †Pewelagus mexicanus
• †Phacoides – tentative report
• †Phacoides
  • †Phacoides californica
  • †Phacoides quintamaia
  • †Phacoides sp.
• †Phaenolauthia
  • †Phaenolauthia sp.
• †Phalacrocorax
  • †Phalacrocorax auritus
  • †Phalacrocorax chapalensis – type locality for species
  • †Phalacrocorax goletensis – type locality for species
  • †Phalacrocorax goletensis
• †Phalium
  • †Phalium globosum
• †Pheidole
  • †Pheidole sp. 1informal
  • †Pheidole sp. 2informal
• †Phenacodus
  • †Phenacodus vortmani
• †Philosepedon
  • †Philosepedon apozonallii – type locality for species
  • †Philosepedon labecula – type locality for species
  • †Philosepedon mexicana – type locality for species
  • †Philosepedon usitata – type locality for species
• †Phocoena
  • †Phocoena sinus – type locality for species
• †Phoenicopterus
  • †Phoenicopterus copei
  • †Phoenicopterus stocki – type locality for species
• †Pholadomya
  • †Pholadomya claibornensis
  • †Pholadomya sp.
• †Pholeomyia – tentative report
  • †Pholeomyia sp.
• †Phos
  • †Phos chapai
  • †Phos hilli – tentative report
• †Phrontis
  • †Phrontis brunneostoma
  • †Phrontis iodes
• †Phrynosoma
  • †Phrynosoma sp.
• †Phrynus
  • †Phrynus mexicana – type locality for species
• †Phugatherium
  • †Phugatherium dichroplax – or unidentified comparable form
  • †Phugatherium dichroplax
• †Phyllomyza
  • †Phyllomyza hurdi – type locality for species
• †Phyllonotus
  • †Phyllonotus nitidus
  • †Phyllonotus pomum
• †Physa
  • †Physa sp.
• †Physocypria
  • †Physocypria sp.
• †Piesocorynus
  • †Piesocorynus brevitectus – type locality for species
  • †Piesocorynus elongatus – type locality for species
  • †Piesocorynus parategus – type locality for species
  • †Piesocorynus parvocorpus – type locality for species
  • †Piesocorynus villosus – type locality for species
• †Pinctada
  • †Pinctada mazatlanica
• †Pinna
  • †Pinna latrania
  • †Pinna llajasensis
  • †Pinna sp.
• †Pinnularia
  • †Pinnularia ruttneri
• †Pintomyia
  • †Pintomyia bolontikui
• †Pironastrea
  • †Pironastrea antiguensis – or unidentified comparable form
• †Piscolithax
  • †Piscolithax boreios – type locality for species
  • †Piscolithax tedfordi – type locality for species
• †Pistacia
  • †Pistacia marquezii – type locality for species
• †Pitar
  • †Pitar amichel
  • †Pitar cantui
  • †Pitar helenae
  • †Pitar joaquinensis
  • †Pitar mendezensis
  • †Pitar sp.
• †Pitarella
  • †Pitarella calceola – tentative report
• †Pituophis – tentative report
  • †Pituophis sp.
• †Placosmilia
  • †Placosmilia copoyensis – type locality for species
  • †Placosmilia copoyensis
• †Placotrochus
  • †Placotrochus sp. – tentative report
• †Placunanomia
  • †Placunanomia hannibali – type locality for species
  • †Placunanomia hannibali
• †Plagioctenium
  • †Plagioctenium mendenhalli
• †Plagionotus
  • †Plagionotus loveni – or unidentified comparable form
• †Plaina
  • †Plaina sp.
• †Planoxyopes – type locality for genus
  • †Planoxyopes eximius – type locality for species
• †Platygonus – or unidentified comparable form
• †Platygonus
  • †Platygonus compressus – tentative report
  • †Platygonus sp.
• †Platyoptera
  • †Platyoptera pacifica – type locality for species
  • †Platyoptera pacifica
• †Platytrochus
  • †Platytrochus dominicensis
• †Plecia
  • †Plecia pristina – type locality for species
• †Plecotus
  • †Plecotus tetralophodon
• †Plectropsyche
  • †Plectropsyche alvarezi – type locality for species
  • †Plectropsyche alvarezi
• †Plegadis – or unidentified comparable form
  • †Plegadis sp.
• †Pleiolama
  • †Pleiolama vera
• †Plesiocetus – or unidentified related form
• †Plesiocetus
  • †Plesiocetus sp.
• †Pleurofusia
  • †Pleurofusia collaris – tentative report
  • †Pleurofusia sp.
  • †Pleurofusia vicksburgensis – tentative report
• †Pleurolira
  • †Pleurolira tenagos – tentative report
• †Pleuroliria
  • †Pleuroliria sp.
• †Pleurotoma
  • †Pleurotoma angermanni
  • †Pleurotoma inaudita
  • †Pleurotoma scaliae
  • †Pleurotoma veracruzana
  • †Pleurotoma zapoteca
• †Pleurotomella
  • †Pleurotomella harbisonae
• †Plicatula
  • †Plicatula densata
  • †Plicatula filamentosa – or unidentified related form
  • †Plicatula lalajensis
  • †Plicatula sp.
  • †Plicatula spondylopsis
• †Plioceros
  • †Plioceros sp.
• †Pliohippus
  • †Pliohippus potosinus – type locality for species
• †Plionictis
  • †Plionictis oaxacaensis
• †Plionycteris
  • †Plionycteris russelli
• †Pliophenacomys
  • †Pliophenacomys wilsoni – type locality for species
  • †Pliophenacomys wilsoni
• †Pocillopora
  • †Pocillopora capitata
  • †Pocillopora damicornis
  • †Pocillopora elegans – or unidentified comparable form
  • †Pocillopora elegans
  • †Pocillopora guadalupensis – type locality for species
  • †Pocillopora sp.
  • †Pocillopora verrucosa
• †Podiceps
  • †Podiceps caspicus
  • †Podiceps parvus
• †Podilymbus
  • †Podilymbus podiceps
• †Pododesmus
  • †Pododesmus macrochisma
• †Poebrotherium
  • †Poebrotherium sp.
• †Poirieria
  • †Poirieria alaquaensis
  • †Poirieria dominicensis
  • †Poirieria septima – type locality for species
• †Polinices
  • †Polinices alamedensis – tentative report
  • †Polinices bifasciatus – tentative report
  • †Polinices bifasciatus
  • †Polinices byramensis
  • †Polinices hornii
  • †Polinices humboldi
  • †Polinices lewisi – tentative report
  • †Polinices lewisi
  • †Polinices pinionensis
  • †Polinices saulae – type locality for species
  • †Polinices saulae
  • †Polinices simiensis
  • †Polinices sp.
  • †Polinices uber
• †Polinicies
  • †Polinicies reclusianus
• †Polyderis
  • †Polyderis antigua – type locality for species
• †Polymesoda
  • †Polymesoda nicaraguana – or unidentified comparable form
  • †Polymesoda sp.
• †Polynemoidea
  • †Polynemoidea mexicana – type locality for species
• †Polystira
  • †Polystira barretti
  • †Polystira tenagos
• †Pontoporia – or unidentified related form
  • †Pontoporia sp.
• †Porites
  • †Porites astreoides
  • †Porites baracoaensis
  • †Porites douvillei
  • †Porites furcata
  • †Porites lobata
  • †Porites macdonaldi – tentative report
  • †Porites panamensis
  • †Porites porites
  • †Porites sp.
  • †Porites sverdrupi – or unidentified comparable form
  • †Porites sverdrupi
  • †Porites trinitatis
• †Porosoma
  • †Porosoma fifei – type locality for species
• †Porphyrio
  • †Porphyrio martinicus
• †Portunus
  • †Portunus atecuicitlis – type locality for species
  • †Portunus atecuicitlis
• †Porzana
  • †Porzana carolina
• †Potamides – tentative report
• †Potamides
  • †Potamides plicifera
  • †Potamides tricarinatus
• †Potamocypris
  • †Potamocypris sp.
• †Praekogia – type locality for genus
• †Praekogia
  • †Praekogia cedrosensis – type locality for species
  • †Praekogia cedrosensis
• †Praerhapydionina
  • †Praerhapydionina vanwessemi
• †Prehepatus
  • †Prehepatus mexicanus
• †Prionace
  • †Prionace glauca
• †Priscoficus
  • †Priscoficus juvenis – tentative report
  • †Priscoficus sp.
  • †Priscoficus tritaria
• †Proadusta
  • †Proadusta sp.
• †Procamelus – or unidentified comparable form
  • †Procamelus sp.
• †Proceratium
  • †Proceratium poinari
• †Procolobostema – type locality for genus
• †Procolobostema
  • †Procolobostema hurdi – type locality for species
  • †Procolobostema incisum – type locality for species
  • †Procolobostema obscurum – type locality for species
• †Procyon
  • †Procyon lotor
  • †Procyon sp.
• †Prodipodomys
  • †Prodipodomys idahoensis
  • †Prodipodomys sp.
• †Profidia – type locality for genus
  • †Profidia nitida – type locality for species
• †Prolimnocyon
  • †Prolimnocyon sp.
• †Pronepos – type locality for genus
• †Pronepos
  • †Pronepos exilis – type locality for species
  • †Pronepos fossilis – type locality for species
  • †Pronepos fossilis – tentative report
  • †Pronepos fossilis
• †Propago – type locality for genus
  • †Propago debilis – type locality for species
• †Proporocyclina
  • †Proporocyclina tobleri
• †Propustularia
  • †Propustularia kemperae
  • †Propustularia simiensis – or unidentified comparable form
• †Prorhinopsenius – type locality for genus
  • †Prorhinopsenius mexicanus – type locality for species
• †Prosigmodon
  • †Prosigmodon chihuahuensis – type locality for species
  • †Prosigmodon chihuahuensis
  • †Prosigmodon ferrusquiai – type locality for species
  • †Prosigmodon oroscoi
• †Prosocer – type locality for genus
  • †Prosocer mollis – type locality for species
• †Prosthennops
  • †Prosthennops xiphodonticus – or unidentified comparable form
• †Protocytherella
  • †Protocytherella karlana
• †Protoglobicephala – type locality for genus
  • †Protoglobicephala mexicana – type locality for species
• †Protolabis – or unidentified comparable form
  • †Protolabis sp.
• †Protonema
  • †Protonema bartschi
• †Protorcula
  • †Protorcula subpunctata
• †Protoreodon
  • †Protoreodon petersoni
• †Prototama – type locality for genus
  • †Prototama antiqua – type locality for species
  • †Prototama succinea – type locality for species
• †Prototheca
  • †Prototheca tenerrima
• †Protula
  • †Protula sp.
• †Psammacoma
  • †Psammacoma acolasta
  • †Psammacoma gatunensis
  • †Psammacoma zapotalensis
• †Psammocora
  • †Psammocora stellata
• †Psammodulus
  • †Psammodulus mexicanus
• †Psammotreta
  • †Psammotreta cognata – or unidentified comparable form
  • †Psammotreta cognata
  • †Psammotreta obesa – or unidentified comparable form
  • †Psammotreta obesa
• †Psectrosciara
  • †Psectrosciara fossilis – type locality for species
• †Pseudaelurus – tentative report
• †Pseudaelurus
  • †Pseudaelurus intrepidus – tentative report
  • †Pseudaelurus sp.
• †Pseudochama
  • †Pseudochama exogyra
• †Pseudocylindrodon
  • †Pseudocylindrodon pintoensis – type locality for species
• †Pseudodiploria
  • †Pseudodiploria strigosa
• †Pseudoliva
  • †Pseudoliva carinata – tentative report
  • †Pseudoliva nana
  • †Pseudoliva santander
  • †Pseudoliva vetusta – tentative report
• †Pseudomalaxis
  • †Pseudomalaxis sp.
• †Pseudomelatoma
  • †Pseudomelatoma penicillata
  • †Pseudomelatoma torsa
• †Pseudoparablastomeryx – tentative report
  • †Pseudoparablastomeryx sp.
• †Pseudophragmina
  • †Pseudophragmina advena
  • †Pseudophragmina clarki
  • †Pseudophragmina sp.
  • †Pseudophragmina teres
• †Pseudopusula
  • †Pseudopusula californiana
• †Pseudorca
  • †Pseudorca crassidens
• †Pseudotorinia
  • †Pseudotorinia euprepes
  • †Pseudotorinia nupera – or unidentified comparable form
• †Pseudovermilla
  • †Pseudovermilla sp.
• †Pseudozonaria
  • †Pseudozonaria annettae – or unidentified comparable form
  • †Pseudozonaria annettae
  • †Pseudozonaria arabicula
• †Psychoda
  • †Psychoda rusti – type locality for species
  • †Psychoda sp.
  • †Psychoda tzotzili – type locality for species
• †Psyllipsocus
  • †Psyllipsocus sp.
• †Pteria
  • †Pteria limula
  • †Pteria sp.
  • †Pteria sterna
• †Pterigocythereis
  • †Pterigocythereis americana
• †Pteromylaeus
  • †Pteromylaeus sp.
• †Pteropsella
  • †Pteropsella lapidosa
• †Puffinus
  • †Puffinus sp.
  • †Puffinus tedfordi – type locality for species
  • †Puffinus tedfordi
• †Puma
  • †Puma concolor
• †Pupillaria
  • †Pupillaria parcipictus
• †Purpura – report made of unidentified related form or using admittedly obsolete nomenclature
• †Purpura
  • †Purpura festiva
  • †Purpura nuttalli
  • †Purpura pansa
  • †Purpura sp. – type locality for species
• †Pusula
  • †Pusula californiana
  • †Pusula radians
  • †Pusula solandri
• †Pycnodonte
  • †Pycnodonte bajaensis
  • †Pycnodonte eldridgei – or unidentified comparable form
  • †Pycnodonte heermanni
  • †Pycnodonte loeli
  • †Pycnodonte pacifica – type locality for species
  • †Pycnodonte pacifica
  • †Pycnodonte verracruzana – type locality for species
• †Pyramidella
  • †Pyramidella sp.
• †Pyrene
  • †Pyrene fuscata
• †Quinqueloculina
  • †Quinqueloculina sp.
• †Quiscalus
  • †Quiscalus mexicanus
• †Raadshoovenia
  • †Raadshoovenia guatemalensis
• †Raadshovenia
  • †Raadshovenia guatemalensis
• †Raeta
  • †Raeta gibbosa
  • †Raeta sp.
  • †Raeta undulata
• †Rana
  • †Rana pipiens
  • †Rana sp.
• †Ranina
  • †Ranina berglundi – type locality for species
  • †Ranina berglundi
• †Raninoides
  • †Raninoides acanthocolus
  • †Raninoides mexicanus
  • †Raninoides proracanthus
  • †Raninoides sp.
• †Rapana
  • †Rapana imperialis – type locality for species
  • †Rapana imperialis
  • †Rapana vaquerosensis
• †Reithrodontomys
  • †Reithrodontomys fulvescens
  • †Reithrodontomys megalotis
  • †Reithrodontomys sp.
• †Reticutriton
  • †Reticutriton lineatus
• †Retusa
  • †Retusa tantilla
• †Rhapidionina
  • †Rhapidionina limbata
• †Rhaponeis
  • †Rhaponeis amphioceros
  • †Rhaponeis sachalinensis
• †Rhapydionina
  • †Rhapydionina limbata
• †Rhineura
  • †Rhineura sp.
• †Rhinoclavis
  • †Rhinoclavis gemmata
• †Rhinocoryne
  • †Rhinocoryne humboldti
• †Rhinophrynus
  • †Rhinophrynus dorsalis
• †Rhizangia
  • †Rhizangia sp.
• †Rhizoprionodon
  • †Rhizoprionodon longurio
  • †Rhizoprionodon sp.
• †Rhus
  • †Rhus sp.
  • †Rhus toxicodendroides – type locality for species
• †Rhynchotherium – tentative report
• †Rhynchotherium
  • †Rhynchotherium falconeri
  • †Rhynchotherium sp.
• †Rimella
  • †Rimella sp.
• †Rissoa
  • †Rissoa epulata – or unidentified comparable form
  • †Rissoa epulata
• †Rissoella
  • †Rissoella excolpa
  • †Rissoella tumens
• †Rissoina
  • †Rissoina catesbyana
  • †Rissoina cleo
  • †Rissoina sagraiana
• †Rondeletia – tentative report
  • †Rondeletia sp.
• †Rotularia
  • †Rotularia dickhauti
• †Saccella
  • †Saccella fabalis – or unidentified comparable form
  • †Saccella taphria
• †Saccostrea
  • †Saccostrea palmula
• †Sachella
  • †Sachella taphria
• †Salina
  • †Salina tristani – tentative report
• †Sanguinolaria
  • †Sanguinolaria sp.
• †Saniwa – or unidentified comparable form
  • †Saniwa sp.
• †Sassia
  • †Sassia septemdentata
• †Saxidomus
  • †Saxidomus nuttalli
  • †Saxidomus vaquerosensis – or unidentified comparable form
• †Scalina
  • †Scalina escandoni
  • †Scalina retifera
  • †Scalina sp.
  • †Scalina trigintanaria
• †Scaphander
  • †Scaphander costatus
  • †Scaphander sp. – tentative report
  • †Scaphander sp.
• †Scaphokogia – or unidentified comparable form
  • †Scaphokogia sp.
• †Scatopse
  • †Scatopse bilaminata – type locality for species
  • †Scatopse primula – type locality for species
  • †Scatopse primula
• †Sceloporus
  • †Sceloporus sp.
  • †Sceloporus variabilis
• †Scheloribates
  • †Scheloribates durhami – type locality for species
• †Schizaster
  • †Schizaster sp.
  • †Schizaster subcylindricus
• †Schizoporella
  • †Schizoporella cornuta
  • †Schizoporella japonica – or unidentified related form
• †Schwenckfeldina
  • †Schwenckfeldina archoica – type locality for species
• †Sciara
  • †Sciara sp.
• †Scirtes
  • †Scirtes sp.
• †Sciurus
  • †Sciurus alleni
• †Scobinella – tentative report
• †Scobinella
  • †Scobinella morierei
  • †Scobinella prionota
  • †Scobinella sp.
• †Scolopocryptops
  • †Scolopocryptops simojovelensis – type locality for species
• †Scolytonema
  • †Scolytonema mexicana – type locality for species
• †Scomber
  • †Scomber sp.
• †Sconsia
  • †Sconsia grayi
  • †Sconsia zacatensis
• †Scutella
  • †Scutella andersoni
  • †Scutella norrisi
  • †Scutella sp. – tentative report
• †Scylla
  • †Scylla costata
• †Seila
  • †Seila montereyensis
• †Seira
  • †Seira frater – tentative report
  • †Seira sp.
• †Selenops
  • †Selenops sp.
• Semele
  • †Semele decisa
  • †Semele flavescens
  • †Semele guaynasensis
  • †Semele jovis
  • †Semele perlamellosa
  • †Semele rupicola
  • †Semele sp.
• †Semicassis
  • †Semicassis centiquadrata
• †Semicosiphus
  • †Semicosiphus sp.
• †Septifer
  • †Septifer bifurcatus
• †Seraphs
  • †Seraphs sp.
• †Serpula
  • †Serpula batequensis – type locality for species
• †Serpulorbis
  • †Serpulorbis margaritacea
  • †Serpulorbis margaritaceus
  • †Serpulorbis sp.
• †Siderastrea
  • †Siderastrea conferta – or unidentified comparable form
  • †Siderastrea conferta
  • †Siderastrea scotia
  • †Siderastrea siderea
• †Sideroseris
  • †Sideroseris durhami
• †Sigaretus
  • †Sigaretus mexicanus
• †Sigmodon
  • †Sigmodon curtisi
  • †Sigmodon hispidus
  • †Sigmodon sp.
• †Siliqua
  • †Siliqua lucida
  • †Siliqua patula
• †Silis
  • †Silis chiapasensis – type locality for species
• †Simaruba
  • †Simaruba veracruziana – type locality for species
• †Simojovelhyus – type locality for genus
  • †Simojovelhyus pocitosense – type locality for species
• †Simomactra
  • †Simomactra dolabriformis
• †Sincola
  • †Sincola gibberula
  • †Sincola mexicana – type locality for species
  • †Sincola mexicana
• †Sinezona
  • †Sinezona rimuloides
• †Sinum
  • †Sinum mississippiense
  • †Sinum multiplicatus – or unidentified comparable form
  • †Sinum obliquum – or unidentified comparable form
  • †Sinum perspectivum
  • †Sinum sp.
• †Siphocypraea
  • †Siphocypraea amandusi – type locality for species
  • †Siphocypraea amandusi
• †Siphonochelus
  • †Siphonochelus curvirostratus
  • †Siphonochelus sawkinsi – or unidentified comparable form
• †Smaragdia
  • †Smaragdia viridis
• †Smilodon
  • †Smilodon fatalis – or unidentified comparable form
  • †Smilodon fatalis
  • †Smilodon sp.
• †Socratea
  • †Socratea brownii
• †Solariorbis
  • †Solariorbis boardmani
• †Solecurtus
  • †Solecurtus cummingianus
  • †Solecurtus sp.
• †Solen
  • †Solen rosaceus
  • †Solen sicarius
  • †Solen sp.
• †Solena
  • †Solena novacularis
  • †Solena sp.
• †Solenopsis
  • †Solenopsis sp.
• †Solenosteira
  • †Solenosteira anomala
  • †Solenosteira macrospira
  • †Solenosteira pallida – or unidentified comparable form
• †Spermophilus
  • †Spermophilus matachicensis – type locality for species
  • †Spermophilus matachicensis
  • †Spermophilus shotwelli
  • †Spermophilus sp.
  • †Spermophilus spilosoma
  • †Spermophilus variegatus
• †Sphaerocypraea
  • †Sphaerocypraea wegeneri
• †Sphaeroma
  • †Sphaeroma burkartii
• †Sphyraena
  • †Sphyraena barracuda – or unidentified comparable form
  • †Sphyraena sp.
• †Sphyrna
  • †Sphyrna lewini
  • †Sphyrna media
  • †Sphyrna mokarran
  • †Sphyrna sp.
  • †Sphyrna vespertina
  • †Sphyrna zygaena
• †Spilogale
  • †Spilogale putorius
• †Spiroglyphus
  • †Spiroglyphus lituella
  • †Spiroglyphus sp.
• †Spirorbis
  • †Spirorbis leptostoma – or unidentified comparable form
  • †Spirorbis sp.
• †Spondylus
  • †Spondylus batequensis – type locality for species
  • †Spondylus batequensis
  • †Spondylus calcifer
  • †Spondylus crassisquama
  • †Spondylus perrini
  • †Spondylus princeps – or unidentified related form
  • †Spondylus princeps
  • †Spondylus sp.
• †Spongicythere
  • †Spongicythere sp.
• †Squalus
  • †Squalus sp.
• †Squatina
  • †Squatina sp.
• †Standesia
  • †Standesia meadensis
• †Stegomastodon – or unidentified comparable form
  • †Stegomastodon sp.
• †Stenella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Stenella
  • †Stenella attenuata – type locality for species
  • †Stenella attenuata
  • †Stenella sp.
• †Stenocypris
  • †Stenocypris sp.
• †Stenohebrus – type locality for genus
  • †Stenohebrus glaesarius – type locality for species
• †Stenomylus
  • †Stenomylus tubutamensis – type locality for species
• †Stenoplax
  • †Stenoplax conspicua
  • †Stenoplax magdalenensis
• †Stenotabanus
  • †Stenotabanus oleariorum – type locality for species
• †Stephanocyathus
  • †Stephanocyathus sp. – tentative report
• †Stephanogonia
  • †Stephanogonia pretiosa
• †Stephanopyxis
  • †Stephanopyxis sp.
• †Stereolepis – or unidentified comparable form
  • †Stereolepis sp.
• †Stichtoptychus
  • †Stichtoptychus mexambrus – type locality for species
• †Stigmaulax
  • †Stigmaulax sulcata
• †Stilpon
  • †Stilpon mexicanus – type locality for species
• †Stoaplax
  • †Stoaplax nandachare
• †Stockoceros
  • †Stockoceros conklingi
  • †Stockoceros sp.
• †Stomatopora
  • †Stomatopora sp.
• †Storrsella
  • †Storrsella haastersi
• †Stramonita
  • †Stramonita biserealis
  • †Stramonita biserialis
  • †Stramonita haemostoma
• †Striatolamia
  • †Striatolamia macrota
• †Strigilla
  • †Strigilla interrupta
• †Striostrea
  • †Striostrea appressa – or unidentified related form
  • †Striostrea cahobasensis – or unidentified comparable form
  • †Striostrea freudenbergi – type locality for species
• †Strioterebrum
  • †Strioterebrum sp.
  • †Strioterebrum spiniferum
  • †Strioterebrum tantula – tentative report
• †Strix
  • †Strix brea
• †Strombina
  • †Strombina colinensis – or unidentified comparable form
  • †Strombina cyphonotus
  • †Strombina maculosa
  • †Strombina olssoni
  • †Strombina pulcherrima
• †Strombus
  • †Strombus galeatus
  • †Strombus gracilior
  • †Strombus proximus – or unidentified comparable form
  • †Strombus pugilis
  • †Strombus sp. – type locality for species
  • †Strombus sp.
• †Strongylocentrotus
  • †Strongylocentrotus franciscanus
  • †Strongylocentrotus purpuratus
  • †Strongylocentrotus sp.
• †Strophocardia
  • †Strophocardia megastropha
• †Strotarchus – type locality for genus
  • †Strotarchus paradoxus – type locality for species
• †Sturnella – tentative report
  • †Sturnella sp.
• †Stylemys
  • †Stylemys sp.
• †Stylophora
  • †Stylophora cambridgensis – or unidentified comparable form
  • †Stylophora chaneyi
  • †Stylophora granulata
  • †Stylophora imperatoris
  • †Stylophora lindavistae – type locality for species
• †Stylosmilia – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Stylosmilia ameliae
• †Subcancilla
  • †Subcancilla ecuadoriana
  • †Subcancilla rhadina
• †Succinarisemus
  • †Succinarisemus totolapensis – type locality for species
• †Succinea
  • †Succinea sp.
• †Sula
  • †Sula sp.
• †Sulcobuccinum
  • †Sulcobuccinum howardi
  • †Sulcobuccinum scalina – or unidentified comparable form
• †Sulcoretusa
  • †Sulcoretusa sulcata
• †Supella
  • †Supella miocenica – type locality for species
• †Surculites
  • †Surculites cabezai
  • †Surculites carpenteriana
• †Sveltia
  • †Sveltia zahni
• †Swammerdamella
  • †Swammerdamella prima – type locality for species
• †Sylvilagus – or unidentified comparable form
• †Sylvilagus
  • †Sylvilagus audubonii – or unidentified comparable form
  • †Sylvilagus audubonii
  • †Sylvilagus floridanus – or unidentified comparable form
  • †Sylvilagus leonensis
  • †Sylvilagus sp.
• †Synaptomys
  • †Synaptomys cooperi
• †Synthetoceras
  • †Synthetoceras sp.
• †Synthliboramphus – tentative report
• †Synthliboramphus
  • †Synthliboramphus sp.
• †Syrrhophus
  • †Syrrhophus campi
• †Syzygophyllia – tentative report
  • †Syzygophyllia sp.
• †Tadarida
  • †Tadarida aurispinosa
  • †Tadarida brasiliensis
  • †Tadarida laticaudata
  • †Tadarida sp.
• †Tagelus
  • †Tagelus californianus
  • †Tagelus plebeius
  • †Tagelus sp.
• †Talityphis
  • †Talityphis carmenae – type locality for species
• †Tamiosoma
  • †Tamiosoma gregaria
  • †Tamiosoma regalis
• †Tanea
  • †Tanea lineata – or unidentified comparable form
• †Tapinoma
  • †Tapinoma sp.
• †Tapirus
  • †Tapirus sp.
• †Taxidea
  • †Taxidea mexicana
  • †Taxidea sp.
  • †Taxidea taxus – or unidentified comparable form
• †Tegula – report made of unidentified related form or using admittedly obsolete nomenclature
• †Tegula
  • †Tegula aureotincta
  • †Tegula brunnea – tentative report
  • †Tegula brunnea
  • †Tegula eiseni
  • †Tegula funebralis
  • †Tegula ligulata
  • †Tegula marcida
  • †Tegula mariana – or unidentified comparable form
  • †Tegula mariana
  • †Tegula montereyi
  • †Tegula pulligo
  • †Tegula rubroflammulata
  • †Tegula rugosa
• †Tehuacana
  • †Tehuacana tehuacana
• †Teinostoma
  • †Teinostoma bibbiana – or unidentified comparable form
  • †Teinostoma caronensis
  • †Teinostoma chipolanum
  • †Teinostoma invallata
  • †Teinostoma squiresi
  • †Teinostoma stemonium
  • †Teinostoma supravallata
• †Teleoceras – or unidentified comparable form
• †Teleoceras
  • †Teleoceras hicksi
  • †Teleoceras sp.
• †Tellidora
  • †Tellidora burnetti
• †Tellina – tentative report
• †Tellina
  • †Tellina bodegensis
  • †Tellina cumingii
  • †Tellina jungi
  • †Tellina meropsis
  • †Tellina ochracea
  • †Tellina perrini
  • †Tellina santander
  • †Tellina sp.
• †Telmatoscopus
  • †Telmatoscopus hurdi – type locality for species
• †Tenagodus
  • †Tenagodus bajaensis – type locality for species
• †Terebra
  • †Terebra armillata
  • †Terebra burckhardti – type locality for species
  • †Terebra burckhardti
  • †Terebra elata
  • †Terebra hemphilli
  • †Terebra isaacpetiti
  • †Terebra pedroana
  • †Terebra sp.
  • †Terebra strigata
  • †Terebra subsulcifera
  • †Terebra variegata – or unidentified comparable form
  • †Terebra variegata
• †Terebratalia
  • †Terebratalia batequia – type locality for species
  • †Terebratalia transversia
• †Terebratulina
  • †Terebratulina louisianae – or unidentified comparable form
• †Teredo
  • †Teredo ringens – tentative report
• †Termitaradus
  • †Termitaradus protera – type locality for species
• †Tesserocerus
  • †Tesserocerus simojovelensis – type locality for species
• †Testudo
  • †Testudo sp.
• †Tetraclita
  • †Tetraclita sp.
  • †Tetraclita squamosa
• †Tetrameryx
  • †Tetrameryx mooseri
  • †Tetrameryx sp.
  • †Tetrameryx tacubayensis
• †Texmelanatria
  • †Texmelanatria angeloi
• †Thais
  • †Thais emarginata
  • †Thais planospira
  • †Thais sp.
  • †Thais tecta – or unidentified comparable form
  • †Thais transcosana
  • †Thais wittichi – type locality for species
  • †Thais wittichi
• †Thalassionema
  • †Thalassionema nitzchioides
• †Thalassiothrix
  • †Thalassiothrix longissima
• †Thalassoleon
  • †Thalassoleon mexicanus
• †Thericium
  • †Thericium stercusmuscarum
• †Thomomys – tentative report
• †Thomomys
  • †Thomomys bottae
  • †Thomomys umbrinus – or unidentified comparable form
  • †Thomomys umbrinus
• †Thracia
  • †Thracia curta
  • †Thracia sp.
• †Threticus
  • †Threticus sp.
• †Thunnus
  • †Thunnus sp.
  • †Thunnus thynnus – or unidentified comparable form
• †Tigrisoma – tentative report
  • †Tigrisoma sp.
• †Timoclea
  • †Timoclea picta
• †Tiphyocetus – or unidentified related form
• †Tiphyocetus
  • †Tiphyocetus sp.
  • †Tiphyocetus temblorensis
• †Tityus
  • †Tityus apozonalli – type locality for species
• †Tivela
  • †Tivela byronensis
  • †Tivela stultorum
• †Tivella
  • †Tivella byronensis
  • †Tivella stultorum
• †Tomarctus – or unidentified comparable form
  • †Tomarctus sp.
• †Tonacatecutlius – type locality for genus
  • †Tonacatecutlius gibsoni – type locality for species
• †Tonicella
  • †Tonicella lineata – or unidentified comparable form
• †Tonna
  • †Tonna galea – or unidentified comparable form
• †Tornatellaea
  • †Tornatellaea bella
  • †Tornatellaea cerralvensis
• †Toxorhina
  • †Toxorhina sp.
• †Toxorhynchites
  • †Toxorhynchites mexicanus – type locality for species
• †Trachemys – or unidentified comparable form
• †Trachemys
  • †Trachemys sp.
• †Trachycardium
  • †Trachycardium consors
  • †Trachycardium procerum
  • †Trachycardium sp.
• †Trachyleberidea
  • †Trachyleberidea blanpiedi
• †Trachyphyllia
  • †Trachyphyllia batequensis – type locality for species
  • †Trachyphyllia sawkinsi
• †Trajana
  • †Trajana veracruzana – type locality for species
• †Tremarctos
  • †Tremarctos floridanus – or unidentified comparable form
  • †Tremarctos floridanus
• †Trentepohlia
  • †Trentepohlia immemorata – type locality for species
  • †Trentepohlia mexicana – type locality for species
• †Tresus
  • †Tresus nuttallii
• †Triceratium
  • †Triceratium condecorum – or unidentified comparable form
• †Trichiurus
  • †Trichiurus sp.
• †Trichomyia
  • †Trichomyia antiquaria – type locality for species
  • †Trichomyia axeli – type locality for species
  • †Trichomyia declivivena – type locality for species
  • †Trichomyia discalis – type locality for species
  • †Trichomyia glomerosa – type locality for species
  • †Trichomyia mecocerca – type locality for species
  • †Trichomyia richardi – type locality for species
  • †Trichomyia smithi – type locality for species
  • †Trichomyia sp.
• †Trichopsocus
  • †Trichopsocus maculosus – type locality for species
• †Tricolia
  • †Tricolia pulloides
  • †Tricolia sp.
• †Trigonias
  • †Trigonias sp.
• †Trimusculus
  • †Trimusculus reticulata
• †Triphora
  • †Triphora hemphilli
  • †Triphora pedroana – or unidentified comparable form
• †Triplofusus
  • †Triplofusus princeps
• †Tripsycha
  • †Tripsycha centiquadra
• †Trochita
  • †Trochita aperta
  • †Trochita costellata
• †Trochocyathus
  • †Trochocyathus mexicanum – type locality for species
  • †Trochocyathus mexicanum
• †Trochoseris
  • †Trochoseris aperta – or unidentified comparable form
• †Trochus
  • †Trochus sp.
• †Trophon – tentative report
• †Trophon
  • †Trophon belcheri
  • †Trophon isthmicus
  • †Trophon sp.
  • †Trophon triangulatus – or unidentified comparable form
• †Truncatella
  • †Truncatella californica
  • †Truncatella guadalupensis
  • †Truncatella stimpsoni
• †Tubastraea
  • †Tubastraea tenuilamellosa
• †Tubulostium
  • †Tubulostium cortezi
• †Tucetona
  • †Tucetona multicostata
• †Turbinaria
  • †Turbinaria durhami – type locality for species
• †Turbinella
  • †Turbinella falconensis
  • †Turbinella hermani – type locality for species
  • †Turbinella hermani
• †Turbinolia
  • †Turbinolia dickersoni
• †Turbo
  • †Turbo fluctuosa
  • †Turbo fluctuosus
  • †Turbo sp.
  • †Turbo squamiger
• †Turbonilla
  • †Turbonilla almo
  • †Turbonilla aresta
  • †Turbonilla beatula
  • †Turbonilla buttoni
  • †Turbonilla sp.
  • †Turbonilla tenuicula
• †Turricula
  • †Turricula maculosa
  • †Turricula sp.
• †Turris
  • †Turris ostrearum – or unidentified comparable form
• †Turritella – report made of unidentified related form or using admittedly obsolete nomenclature
• †Turritella
  • †Turritella abrupta
  • †Turritella acosta
  • †Turritella aguilerae
  • †Turritella altilira – or unidentified comparable form
  • †Turritella altilira
  • †Turritella anactor
  • †Turritella andersoni
  • †Turritella bosei – type locality for species
  • †Turritella bosei
  • †Turritella buwaldana
  • †Turritella ceibana
  • †Turritella cooperi
  • †Turritella cortezi
  • †Turritella gonostoma – or unidentified comparable form
  • †Turritella gonostoma
  • †Turritella guppyi
  • †Turritella humerosa
  • †Turritella imperialis
  • †Turritella inezana – or unidentified related form
  • †Turritella inezana – or unidentified comparable form
  • †Turritella inezana
  • †Turritella infragranulata
  • †Turritella lawsoni
  • †Turritella leucostoma
  • †Turritella marcosensis
  • †Turritella margaritana – or unidentified comparable form
  • †Turritella mariana
  • †Turritella multilira
  • †Turritella nasuta
  • †Turritella ocoyana – or unidentified related form
  • †Turritella ocoyana – or unidentified comparable form
  • †Turritella ocoyana
  • †Turritella pachecoensis – or unidentified comparable form
  • †Turritella pachecoensis
  • †Turritella peninsularis
  • †Turritella postmortoni
  • †Turritella reversa
  • †Turritella sanjuanensis
  • †Turritella sp. – type locality for species
  • †Turritella sp.
  • †Turritella subgrundifera – tentative report
  • †Turritella subgrundifera
  • †Turritella temblorensis
  • †Turritella tigrina
  • †Turritella tristis
  • †Turritella tuctepecensis
  • †Turritella tuxtepecensis
  • †Turritella uvasana – tentative report
  • †Turritella uvasana – or unidentified comparable form
  • †Turritella uvasana
  • †Turritella variata
  • †Turritella wittichi – type locality for species
• †Turritriton
  • †Turritriton gibbosus
• †Tursiops
  • †Tursiops truncatus
• †Tuthillia
  • †Tuthillia danielburckhardti – type locality for species
• †Typhinellus
  • †Typhinellus sowerbii
• †Tyrannochthonius
  • †Tyrannochthonius sp.
• †Undulostrea
  • †Undulostrea megodon
• †Urocyon
  • †Urocyon cinereoargenteus
• †Uromitra
  • †Uromitra vokesae
• †Urosyca
  • †Urosyca caudata
• †Ursus
  • †Ursus americanus
  • †Ursus sp.
• †Vasum
  • †Vasum caestus
  • †Vasum haitensis
  • †Vasum muricatum – or unidentified comparable form
• †Velates – report made of unidentified related form or using admittedly obsolete nomenclature
• †Velates
  • †Velates batequensis – type locality for species
  • †Velates batequensis
  • †Velates perversus
  • †Velates vokesi
• †Velutina
  • †Velutina velutina
• †Venericardia
  • †Venericardia cacamai – type locality for species
  • †Venericardia carsonensis – or unidentified comparable form
  • †Venericardia densata – tentative report
  • †Venericardia densata
  • †Venericardia diga
  • †Venericardia elongata
  • †Venericardia francescae
  • †Venericardia planicosta
  • †Venericardia rotunda – or unidentified comparable form
  • †Venericardia sp.
  • †Venericardia vaughani
• †Ventricolaria
  • †Ventricolaria harrisiana – or unidentified comparable form
  • †Ventricolaria harrisiana
• †Vermetus
  • †Vermetus compactus – or unidentified comparable form
  • †Vermetus indentatus
  • †Vermetus pulcher
  • †Vermetus sp.
• †Vermicularia
  • †Vermicularia spirata
  • †Vermicularia woodringi – or unidentified comparable form
• †Verrucoides
  • †Verrucoides stenohedra
• †Verticordia
  • †Verticordia agueguexquitensis
• †Vesicomya
  • †Vesicomya vesica
• †Veterator – type locality for genus
• †Veterator
  • †Veterator extinctus – type locality for species
  • †Veterator sp.
• †Vetus
  • †Vetus robustus – type locality for species
  • †Vetus robustus
• †Viapinnixa
  • †Viapinnixa alvarezi
  • †Viapinnixa perrilliatae
• †Viaplax
  • †Viaplax urpiniana
• †Vitrinella
  • †Vitrinella obliquestriata
  • †Vitrinella oldroydi
  • †Vitrinella stearnsi
• †Vitularia
  • †Vitularia salebrosa
• †Viverravus – tentative report
  • †Viverravus sp.
• †Vokesimurex
  • †Vokesimurex messorius
  • †Vokesimurex recurvirostris
• †Vokesula
  • †Vokesula aldrichi
  • †Vokesula smithvillensis – tentative report
  • †Vokesula smithvillensis
• †Volutilithes
  • †Volutilithes muricinus – or unidentified comparable form
  • †Volutilithes sp.
• †Volvarina
  • †Volvarina taeniata
  • †Volvarina taeniolata
• †Volvulella
  • †Volvulella garzai
  • †Volvulella oxytata
• †Vulpes
  • †Vulpes sp.
  • †Vulpes stenognathus
• †Vulutocorbis – tentative report
  • †Vulutocorbis wheelockensis – or unidentified comparable form
• †Wyolestes
  • †Wyolestes iglesius – type locality for species
• †Xancus
  • †Xancus wilsoni – tentative report
  • †Xancus wilsoni
• †Xanthacrona
  • †Xanthacrona sp.
• †Xanthichthys – or unidentified comparable form
  • †Xanthichthys sp.
• †Xanthipyxis
  • †Xanthipyxis sp.
• †Xanthocephalus
  • †Xanthocephalus xanthocephalus
• †Xanthosia
  • †Xanthosia americana
• †Xenophora
  • †Xenophora caribbaea
  • †Xenophora conchyliophora – or unidentified comparable form
  • †Xenophora conchyliophora
  • †Xenophora stocki
  • †Xenophora zitteli
• †Xenosiren – type locality for genus
  • †Xenosiren yucateca – type locality for species
• †Xestoleberis
  • †Xestoleberis vicksburgensis
• †Xiphocentron
  • †Xiphocentron chiapasi – type locality for species
  • †Xiphocentron chiapasi
• †Zalophus
  • †Zalophus californianus
• †Ziphius
  • †Ziphius cavirostris
• †Zirfaea
  • †Zirfaea pilsbryi – tentative report
  • †Zirfaea pilsbryi

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017. {{cite web}}: |author= has generic name (help)

{{Lists of the prehistoric life of }} {{portalbar|Paleontology|Prehistory of North America|Alabama}}